65aa853412697e75e31ef1be883f05f073304926
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      //< file index
94     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     //< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static const char *last_asked_format = NULL;
101 static AVDictionary *ts_scale;
102
103 static StreamMap *stream_maps = NULL;
104 static int nb_stream_maps;
105
106 static AVDictionary *codec_names;
107
108 /* first item specifies output metadata, second is input */
109 static MetadataMap (*meta_data_maps)[2] = NULL;
110 static int nb_meta_data_maps;
111 static int metadata_global_autocopy   = 1;
112 static int metadata_streams_autocopy  = 1;
113 static int metadata_chapters_autocopy = 1;
114
115 static int chapters_input_file = INT_MAX;
116
117 /* indexed by output file stream index */
118 static int *streamid_map = NULL;
119 static int nb_streamid_map = 0;
120
121 static int frame_width  = 0;
122 static int frame_height = 0;
123 static float frame_aspect_ratio = 0;
124 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
125 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
126 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
127 static AVRational frame_rate;
128 static float video_qscale = 0;
129 static uint16_t *intra_matrix = NULL;
130 static uint16_t *inter_matrix = NULL;
131 static const char *video_rc_override_string=NULL;
132 static int video_disable = 0;
133 static int video_discard = 0;
134 static unsigned int video_codec_tag = 0;
135 static char *video_language = NULL;
136 static int same_quant = 0;
137 static int do_deinterlace = 0;
138 static int top_field_first = -1;
139 static int me_threshold = 0;
140 static int intra_dc_precision = 8;
141 static int qp_hist = 0;
142 #if CONFIG_AVFILTER
143 static char *vfilters = NULL;
144 #endif
145
146 static int intra_only = 0;
147 static int audio_sample_rate = 0;
148 #define QSCALE_NONE -99999
149 static float audio_qscale = QSCALE_NONE;
150 static int audio_disable = 0;
151 static int audio_channels = 0;
152 static unsigned int audio_codec_tag = 0;
153 static char *audio_language = NULL;
154
155 static int subtitle_disable = 0;
156 static char *subtitle_language = NULL;
157 static unsigned int subtitle_codec_tag = 0;
158
159 static int data_disable = 0;
160 static unsigned int data_codec_tag = 0;
161
162 static float mux_preload= 0.5;
163 static float mux_max_delay= 0.7;
164
165 static int64_t recording_time = INT64_MAX;
166 static int64_t start_time = 0;
167 static int64_t input_ts_offset = 0;
168 static int file_overwrite = 0;
169 static AVDictionary *metadata;
170 static int do_benchmark = 0;
171 static int do_hex_dump = 0;
172 static int do_pkt_dump = 0;
173 static int do_psnr = 0;
174 static int do_pass = 0;
175 static char *pass_logfilename_prefix = NULL;
176 static int video_sync_method= -1;
177 static int audio_sync_method= 0;
178 static float audio_drift_threshold= 0.1;
179 static int copy_ts= 0;
180 static int copy_tb;
181 static int opt_shortest = 0;
182 static char *vstats_filename;
183 static FILE *vstats_file;
184 static int opt_programid = 0;
185 static int copy_initial_nonkeyframes = 0;
186
187 static int rate_emu = 0;
188
189 static int audio_volume = 256;
190
191 static int exit_on_error = 0;
192 static int using_stdin = 0;
193 static int verbose = 1;
194 static int thread_count= 1;
195 static int64_t video_size = 0;
196 static int64_t audio_size = 0;
197 static int64_t extra_size = 0;
198 static int nb_frames_dup = 0;
199 static int nb_frames_drop = 0;
200 static int input_sync;
201 static uint64_t limit_filesize = 0;
202 static int force_fps = 0;
203 static char *forced_key_frames = NULL;
204
205 static float dts_delta_threshold = 10;
206
207 static int64_t timer_start;
208
209 static uint8_t *audio_buf;
210 static uint8_t *audio_out;
211 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
212
213 static short *samples;
214
215 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
216 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
217 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
218
219 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
220
221 struct InputStream;
222
223 typedef struct OutputStream {
224     int file_index;          /* file index */
225     int index;               /* stream index in the output file */
226     int source_index;        /* InputStream index */
227     AVStream *st;            /* stream in the output file */
228     int encoding_needed;     /* true if encoding needed for this stream */
229     int frame_number;
230     /* input pts and corresponding output pts
231        for A/V sync */
232     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
233     struct InputStream *sync_ist; /* input stream to sync against */
234     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
235     AVBitStreamFilterContext *bitstream_filters;
236     AVCodec *enc;
237
238     /* video only */
239     int video_resample;
240     AVFrame pict_tmp;      /* temporary image for resampling */
241     struct SwsContext *img_resample_ctx; /* for image resampling */
242     int resample_height;
243     int resample_width;
244     int resample_pix_fmt;
245     AVRational frame_rate;
246
247     float frame_aspect_ratio;
248
249     /* forced key frames */
250     int64_t *forced_kf_pts;
251     int forced_kf_count;
252     int forced_kf_index;
253
254     /* audio only */
255     int audio_resample;
256     ReSampleContext *resample; /* for audio resampling */
257     int resample_sample_fmt;
258     int resample_channels;
259     int resample_sample_rate;
260     int reformat_pair;
261     AVAudioConvert *reformat_ctx;
262     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
263     FILE *logfile;
264
265 #if CONFIG_AVFILTER
266     AVFilterContext *output_video_filter;
267     AVFilterContext *input_video_filter;
268     AVFilterBufferRef *picref;
269     char *avfilter;
270     AVFilterGraph *graph;
271 #endif
272
273    int sws_flags;
274    AVDictionary *opts;
275    int is_past_recording_time;
276 } OutputStream;
277
278 typedef struct InputStream {
279     int file_index;
280     AVStream *st;
281     int discard;             /* true if stream data should be discarded */
282     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
283     AVCodec *dec;
284
285     int64_t       start;     /* time when read started */
286     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
287                                 is not defined */
288     int64_t       pts;       /* current pts */
289     PtsCorrectionContext pts_ctx;
290     double ts_scale;
291     int is_start;            /* is 1 at the start and after a discontinuity */
292     int showed_multi_packet_warning;
293     AVDictionary *opts;
294 } InputStream;
295
296 typedef struct InputFile {
297     AVFormatContext *ctx;
298     int eof_reached;      /* true if eof reached */
299     int ist_index;        /* index of first stream in ist_table */
300     int buffer_size;      /* current total buffer size */
301     int64_t ts_offset;
302 } InputFile;
303
304 typedef struct OutputFile {
305     AVFormatContext *ctx;
306     AVDictionary *opts;
307     int ost_index;       /* index of the first stream in output_streams */
308     int64_t recording_time; /* desired length of the resulting file in microseconds */
309 } OutputFile;
310
311 static InputStream *input_streams = NULL;
312 static int         nb_input_streams = 0;
313 static InputFile   *input_files   = NULL;
314 static int         nb_input_files   = 0;
315
316 static OutputStream *output_streams = NULL;
317 static int        nb_output_streams = 0;
318 static OutputFile   *output_files   = NULL;
319 static int        nb_output_files   = 0;
320
321 #if CONFIG_AVFILTER
322
323 static int configure_video_filters(InputStream *ist, OutputStream *ost)
324 {
325     AVFilterContext *last_filter, *filter;
326     /** filter graph containing all filters including input & output */
327     AVCodecContext *codec = ost->st->codec;
328     AVCodecContext *icodec = ist->st->codec;
329     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
330     AVRational sample_aspect_ratio;
331     char args[255];
332     int ret;
333
334     ost->graph = avfilter_graph_alloc();
335
336     if (ist->st->sample_aspect_ratio.num){
337         sample_aspect_ratio = ist->st->sample_aspect_ratio;
338     }else
339         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
340
341     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
342              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
343              sample_aspect_ratio.num, sample_aspect_ratio.den);
344
345     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
346                                        "src", args, NULL, ost->graph);
347     if (ret < 0)
348         return ret;
349     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
350                                        "out", NULL, &ffsink_ctx, ost->graph);
351     if (ret < 0)
352         return ret;
353     last_filter = ost->input_video_filter;
354
355     if (codec->width  != icodec->width || codec->height != icodec->height) {
356         snprintf(args, 255, "%d:%d:flags=0x%X",
357                  codec->width,
358                  codec->height,
359                  ost->sws_flags);
360         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
361                                                 NULL, args, NULL, ost->graph)) < 0)
362             return ret;
363         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
364             return ret;
365         last_filter = filter;
366     }
367
368     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
369     ost->graph->scale_sws_opts = av_strdup(args);
370
371     if (ost->avfilter) {
372         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
373         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
374
375         outputs->name    = av_strdup("in");
376         outputs->filter_ctx = last_filter;
377         outputs->pad_idx = 0;
378         outputs->next    = NULL;
379
380         inputs->name    = av_strdup("out");
381         inputs->filter_ctx = ost->output_video_filter;
382         inputs->pad_idx = 0;
383         inputs->next    = NULL;
384
385         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
386             return ret;
387         av_freep(&ost->avfilter);
388     } else {
389         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
390             return ret;
391     }
392
393     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
394         return ret;
395
396     codec->width  = ost->output_video_filter->inputs[0]->w;
397     codec->height = ost->output_video_filter->inputs[0]->h;
398     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
399         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
400         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
401         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
402
403     return 0;
404 }
405 #endif /* CONFIG_AVFILTER */
406
407 static void term_exit(void)
408 {
409     av_log(NULL, AV_LOG_QUIET, "");
410 }
411
412 static volatile int received_sigterm = 0;
413 static volatile int received_nb_signals = 0;
414
415 static void
416 sigterm_handler(int sig)
417 {
418     received_sigterm = sig;
419     received_nb_signals++;
420     term_exit();
421 }
422
423 static void term_init(void)
424 {
425     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
426     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
427 #ifdef SIGXCPU
428     signal(SIGXCPU, sigterm_handler);
429 #endif
430 }
431
432 static int decode_interrupt_cb(void)
433 {
434     return received_nb_signals > 1;
435 }
436
437 static int exit_program(int ret)
438 {
439     int i;
440
441     /* close files */
442     for(i=0;i<nb_output_files;i++) {
443         AVFormatContext *s = output_files[i].ctx;
444         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
445             avio_close(s->pb);
446         avformat_free_context(s);
447         av_dict_free(&output_files[i].opts);
448     }
449     for(i=0;i<nb_input_files;i++) {
450         av_close_input_file(input_files[i].ctx);
451     }
452     for (i = 0; i < nb_input_streams; i++)
453         av_dict_free(&input_streams[i].opts);
454
455     av_free(intra_matrix);
456     av_free(inter_matrix);
457
458     if (vstats_file)
459         fclose(vstats_file);
460     av_free(vstats_filename);
461
462     av_free(streamid_map);
463     av_free(meta_data_maps);
464
465     av_freep(&input_streams);
466     av_freep(&input_files);
467     av_freep(&output_streams);
468     av_freep(&output_files);
469
470     uninit_opts();
471     av_free(audio_buf);
472     av_free(audio_out);
473     allocated_audio_buf_size= allocated_audio_out_size= 0;
474     av_free(samples);
475
476 #if CONFIG_AVFILTER
477     avfilter_uninit();
478 #endif
479
480     if (received_sigterm) {
481         fprintf(stderr,
482             "Received signal %d: terminating.\n",
483             (int) received_sigterm);
484         exit (255);
485     }
486
487     exit(ret); /* not all OS-es handle main() return value */
488     return ret;
489 }
490
491 static void assert_avoptions(AVDictionary *m)
492 {
493     AVDictionaryEntry *t;
494     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
495         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
496         exit_program(1);
497     }
498 }
499
500 static void assert_codec_experimental(AVCodecContext *c, int encoder)
501 {
502     const char *codec_string = encoder ? "encoder" : "decoder";
503     AVCodec *codec;
504     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
505         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
506         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
507                 "results.\nAdd '-strict experimental' if you want to use it.\n",
508                 codec_string, c->codec->name);
509         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
510         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
511             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
512                    codec_string, codec->name);
513         exit_program(1);
514     }
515 }
516
517 /* similar to ff_dynarray_add() and av_fast_realloc() */
518 static void *grow_array(void *array, int elem_size, int *size, int new_size)
519 {
520     if (new_size >= INT_MAX / elem_size) {
521         fprintf(stderr, "Array too big.\n");
522         exit_program(1);
523     }
524     if (*size < new_size) {
525         uint8_t *tmp = av_realloc(array, new_size*elem_size);
526         if (!tmp) {
527             fprintf(stderr, "Could not alloc buffer.\n");
528             exit_program(1);
529         }
530         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
531         *size = new_size;
532         return tmp;
533     }
534     return array;
535 }
536
537 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
538 {
539     if(codec && codec->sample_fmts){
540         const enum AVSampleFormat *p= codec->sample_fmts;
541         for(; *p!=-1; p++){
542             if(*p == st->codec->sample_fmt)
543                 break;
544         }
545         if (*p == -1) {
546             av_log(NULL, AV_LOG_WARNING,
547                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
548                    av_get_sample_fmt_name(st->codec->sample_fmt),
549                    codec->name,
550                    av_get_sample_fmt_name(codec->sample_fmts[0]));
551             st->codec->sample_fmt = codec->sample_fmts[0];
552         }
553     }
554 }
555
556 /**
557  * Update the requested input sample format based on the output sample format.
558  * This is currently only used to request float output from decoders which
559  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
560  * Ideally this will be removed in the future when decoders do not do format
561  * conversion and only output in their native format.
562  */
563 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
564                               AVCodecContext *enc)
565 {
566     /* if sample formats match or a decoder sample format has already been
567        requested, just return */
568     if (enc->sample_fmt == dec->sample_fmt ||
569         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
570         return;
571
572     /* if decoder supports more than one output format */
573     if (dec_codec && dec_codec->sample_fmts &&
574         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
575         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
576         const enum AVSampleFormat *p;
577         int min_dec = -1, min_inc = -1;
578
579         /* find a matching sample format in the encoder */
580         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
581             if (*p == enc->sample_fmt) {
582                 dec->request_sample_fmt = *p;
583                 return;
584             } else if (*p > enc->sample_fmt) {
585                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
586             } else
587                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
588         }
589
590         /* if none match, provide the one that matches quality closest */
591         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
592                                   enc->sample_fmt - min_dec;
593     }
594 }
595
596 static void choose_sample_rate(AVStream *st, AVCodec *codec)
597 {
598     if(codec && codec->supported_samplerates){
599         const int *p= codec->supported_samplerates;
600         int best=0;
601         int best_dist=INT_MAX;
602         for(; *p; p++){
603             int dist= abs(st->codec->sample_rate - *p);
604             if(dist < best_dist){
605                 best_dist= dist;
606                 best= *p;
607             }
608         }
609         if(best_dist){
610             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
611         }
612         st->codec->sample_rate= best;
613     }
614 }
615
616 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
617 {
618     if(codec && codec->pix_fmts){
619         const enum PixelFormat *p= codec->pix_fmts;
620         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
621             if(st->codec->codec_id==CODEC_ID_MJPEG){
622                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
623             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
624                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
625             }
626         }
627         for(; *p!=-1; p++){
628             if(*p == st->codec->pix_fmt)
629                 break;
630         }
631         if (*p == -1) {
632             if(st->codec->pix_fmt != PIX_FMT_NONE)
633                 av_log(NULL, AV_LOG_WARNING,
634                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
635                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
636                         codec->name,
637                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
638             st->codec->pix_fmt = codec->pix_fmts[0];
639         }
640     }
641 }
642
643 static double
644 get_sync_ipts(const OutputStream *ost)
645 {
646     const InputStream *ist = ost->sync_ist;
647     return (double)(ist->pts - start_time)/AV_TIME_BASE;
648 }
649
650 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
651     int ret;
652
653     while(bsfc){
654         AVPacket new_pkt= *pkt;
655         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
656                                           &new_pkt.data, &new_pkt.size,
657                                           pkt->data, pkt->size,
658                                           pkt->flags & AV_PKT_FLAG_KEY);
659         if(a>0){
660             av_free_packet(pkt);
661             new_pkt.destruct= av_destruct_packet;
662         } else if(a<0){
663             fprintf(stderr, "%s failed for stream %d, codec %s",
664                     bsfc->filter->name, pkt->stream_index,
665                     avctx->codec ? avctx->codec->name : "copy");
666             print_error("", a);
667             if (exit_on_error)
668                 exit_program(1);
669         }
670         *pkt= new_pkt;
671
672         bsfc= bsfc->next;
673     }
674
675     ret= av_interleaved_write_frame(s, pkt);
676     if(ret < 0){
677         print_error("av_interleaved_write_frame()", ret);
678         exit_program(1);
679     }
680 }
681
682 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
683
684 static void do_audio_out(AVFormatContext *s,
685                          OutputStream *ost,
686                          InputStream *ist,
687                          unsigned char *buf, int size)
688 {
689     uint8_t *buftmp;
690     int64_t audio_out_size, audio_buf_size;
691     int64_t allocated_for_size= size;
692
693     int size_out, frame_bytes, ret, resample_changed;
694     AVCodecContext *enc= ost->st->codec;
695     AVCodecContext *dec= ist->st->codec;
696     int osize = av_get_bytes_per_sample(enc->sample_fmt);
697     int isize = av_get_bytes_per_sample(dec->sample_fmt);
698     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
699
700 need_realloc:
701     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
702     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
703     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
704     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
705     audio_buf_size*= osize*enc->channels;
706
707     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
708     if(coded_bps > 8*osize)
709         audio_out_size= audio_out_size * coded_bps / (8*osize);
710     audio_out_size += FF_MIN_BUFFER_SIZE;
711
712     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
713         fprintf(stderr, "Buffer sizes too large\n");
714         exit_program(1);
715     }
716
717     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
718     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
719     if (!audio_buf || !audio_out){
720         fprintf(stderr, "Out of memory in do_audio_out\n");
721         exit_program(1);
722     }
723
724     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
725         ost->audio_resample = 1;
726
727     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
728                        ost->resample_channels    != dec->channels   ||
729                        ost->resample_sample_rate != dec->sample_rate;
730
731     if ((ost->audio_resample && !ost->resample) || resample_changed) {
732         if (resample_changed) {
733             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
734                    ist->file_index, ist->st->index,
735                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
736                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
737             ost->resample_sample_fmt  = dec->sample_fmt;
738             ost->resample_channels    = dec->channels;
739             ost->resample_sample_rate = dec->sample_rate;
740             if (ost->resample)
741                 audio_resample_close(ost->resample);
742         }
743         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
744         if (audio_sync_method <= 1 &&
745             ost->resample_sample_fmt  == enc->sample_fmt &&
746             ost->resample_channels    == enc->channels   &&
747             ost->resample_sample_rate == enc->sample_rate) {
748             ost->resample = NULL;
749             ost->audio_resample = 0;
750         } else if (ost->audio_resample) {
751             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
752                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
753             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
754                                                    enc->sample_rate, dec->sample_rate,
755                                                    enc->sample_fmt,  dec->sample_fmt,
756                                                    16, 10, 0, 0.8);
757             if (!ost->resample) {
758                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
759                         dec->channels, dec->sample_rate,
760                         enc->channels, enc->sample_rate);
761                 exit_program(1);
762             }
763         }
764     }
765
766 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
767     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
768         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
769         if (ost->reformat_ctx)
770             av_audio_convert_free(ost->reformat_ctx);
771         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
772                                                    dec->sample_fmt, 1, NULL, 0);
773         if (!ost->reformat_ctx) {
774             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
775                 av_get_sample_fmt_name(dec->sample_fmt),
776                 av_get_sample_fmt_name(enc->sample_fmt));
777             exit_program(1);
778         }
779         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
780     }
781
782     if(audio_sync_method){
783         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
784                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
785         double idelta= delta*dec->sample_rate / enc->sample_rate;
786         int byte_delta= ((int)idelta)*2*dec->channels;
787
788         //FIXME resample delay
789         if(fabs(delta) > 50){
790             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
791                 if(byte_delta < 0){
792                     byte_delta= FFMAX(byte_delta, -size);
793                     size += byte_delta;
794                     buf  -= byte_delta;
795                     if(verbose > 2)
796                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
797                     if(!size)
798                         return;
799                     ist->is_start=0;
800                 }else{
801                     static uint8_t *input_tmp= NULL;
802                     input_tmp= av_realloc(input_tmp, byte_delta + size);
803
804                     if(byte_delta > allocated_for_size - size){
805                         allocated_for_size= byte_delta + (int64_t)size;
806                         goto need_realloc;
807                     }
808                     ist->is_start=0;
809
810                     memset(input_tmp, 0, byte_delta);
811                     memcpy(input_tmp + byte_delta, buf, size);
812                     buf= input_tmp;
813                     size += byte_delta;
814                     if(verbose > 2)
815                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
816                 }
817             }else if(audio_sync_method>1){
818                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
819                 av_assert0(ost->audio_resample);
820                 if(verbose > 2)
821                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
822 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
823                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
824             }
825         }
826     }else
827         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
828                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
829
830     if (ost->audio_resample) {
831         buftmp = audio_buf;
832         size_out = audio_resample(ost->resample,
833                                   (short *)buftmp, (short *)buf,
834                                   size / (dec->channels * isize));
835         size_out = size_out * enc->channels * osize;
836     } else {
837         buftmp = buf;
838         size_out = size;
839     }
840
841     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
842         const void *ibuf[6]= {buftmp};
843         void *obuf[6]= {audio_buf};
844         int istride[6]= {isize};
845         int ostride[6]= {osize};
846         int len= size_out/istride[0];
847         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
848             printf("av_audio_convert() failed\n");
849             if (exit_on_error)
850                 exit_program(1);
851             return;
852         }
853         buftmp = audio_buf;
854         size_out = len*osize;
855     }
856
857     /* now encode as many frames as possible */
858     if (enc->frame_size > 1) {
859         /* output resampled raw samples */
860         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
861             fprintf(stderr, "av_fifo_realloc2() failed\n");
862             exit_program(1);
863         }
864         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
865
866         frame_bytes = enc->frame_size * osize * enc->channels;
867
868         while (av_fifo_size(ost->fifo) >= frame_bytes) {
869             AVPacket pkt;
870             av_init_packet(&pkt);
871
872             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
873
874             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
875
876             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
877                                        (short *)audio_buf);
878             if (ret < 0) {
879                 fprintf(stderr, "Audio encoding failed\n");
880                 exit_program(1);
881             }
882             audio_size += ret;
883             pkt.stream_index= ost->index;
884             pkt.data= audio_out;
885             pkt.size= ret;
886             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
887                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
888             pkt.flags |= AV_PKT_FLAG_KEY;
889             write_frame(s, &pkt, enc, ost->bitstream_filters);
890
891             ost->sync_opts += enc->frame_size;
892         }
893     } else {
894         AVPacket pkt;
895         av_init_packet(&pkt);
896
897         ost->sync_opts += size_out / (osize * enc->channels);
898
899         /* output a pcm frame */
900         /* determine the size of the coded buffer */
901         size_out /= osize;
902         if (coded_bps)
903             size_out = size_out*coded_bps/8;
904
905         if(size_out > audio_out_size){
906             fprintf(stderr, "Internal error, buffer size too small\n");
907             exit_program(1);
908         }
909
910         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
911         ret = avcodec_encode_audio(enc, audio_out, size_out,
912                                    (short *)buftmp);
913         if (ret < 0) {
914             fprintf(stderr, "Audio encoding failed\n");
915             exit_program(1);
916         }
917         audio_size += ret;
918         pkt.stream_index= ost->index;
919         pkt.data= audio_out;
920         pkt.size= ret;
921         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
922             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
923         pkt.flags |= AV_PKT_FLAG_KEY;
924         write_frame(s, &pkt, enc, ost->bitstream_filters);
925     }
926 }
927
928 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
929 {
930     AVCodecContext *dec;
931     AVPicture *picture2;
932     AVPicture picture_tmp;
933     uint8_t *buf = 0;
934
935     dec = ist->st->codec;
936
937     /* deinterlace : must be done before any resize */
938     if (do_deinterlace) {
939         int size;
940
941         /* create temporary picture */
942         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
943         buf = av_malloc(size);
944         if (!buf)
945             return;
946
947         picture2 = &picture_tmp;
948         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
949
950         if(avpicture_deinterlace(picture2, picture,
951                                  dec->pix_fmt, dec->width, dec->height) < 0) {
952             /* if error, do not deinterlace */
953             fprintf(stderr, "Deinterlacing failed\n");
954             av_free(buf);
955             buf = NULL;
956             picture2 = picture;
957         }
958     } else {
959         picture2 = picture;
960     }
961
962     if (picture != picture2)
963         *picture = *picture2;
964     *bufp = buf;
965 }
966
967 /* we begin to correct av delay at this threshold */
968 #define AV_DELAY_MAX 0.100
969
970 static void do_subtitle_out(AVFormatContext *s,
971                             OutputStream *ost,
972                             InputStream *ist,
973                             AVSubtitle *sub,
974                             int64_t pts)
975 {
976     static uint8_t *subtitle_out = NULL;
977     int subtitle_out_max_size = 1024 * 1024;
978     int subtitle_out_size, nb, i;
979     AVCodecContext *enc;
980     AVPacket pkt;
981
982     if (pts == AV_NOPTS_VALUE) {
983         fprintf(stderr, "Subtitle packets must have a pts\n");
984         if (exit_on_error)
985             exit_program(1);
986         return;
987     }
988
989     enc = ost->st->codec;
990
991     if (!subtitle_out) {
992         subtitle_out = av_malloc(subtitle_out_max_size);
993     }
994
995     /* Note: DVB subtitle need one packet to draw them and one other
996        packet to clear them */
997     /* XXX: signal it in the codec context ? */
998     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
999         nb = 2;
1000     else
1001         nb = 1;
1002
1003     for(i = 0; i < nb; i++) {
1004         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1005         // start_display_time is required to be 0
1006         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1007         sub->end_display_time -= sub->start_display_time;
1008         sub->start_display_time = 0;
1009         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1010                                                     subtitle_out_max_size, sub);
1011         if (subtitle_out_size < 0) {
1012             fprintf(stderr, "Subtitle encoding failed\n");
1013             exit_program(1);
1014         }
1015
1016         av_init_packet(&pkt);
1017         pkt.stream_index = ost->index;
1018         pkt.data = subtitle_out;
1019         pkt.size = subtitle_out_size;
1020         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1021         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1022             /* XXX: the pts correction is handled here. Maybe handling
1023                it in the codec would be better */
1024             if (i == 0)
1025                 pkt.pts += 90 * sub->start_display_time;
1026             else
1027                 pkt.pts += 90 * sub->end_display_time;
1028         }
1029         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1030     }
1031 }
1032
1033 static int bit_buffer_size= 1024*256;
1034 static uint8_t *bit_buffer= NULL;
1035
1036 static void do_video_resample(OutputStream *ost,
1037                               InputStream *ist,
1038                               AVFrame *in_picture,
1039                               AVFrame **out_picture)
1040 {
1041     int resample_changed = 0;
1042     AVCodecContext *dec = ist->st->codec;
1043     *out_picture = in_picture;
1044
1045     resample_changed = ost->resample_width   != dec->width  ||
1046                        ost->resample_height  != dec->height ||
1047                        ost->resample_pix_fmt != dec->pix_fmt;
1048
1049     if (resample_changed) {
1050         av_log(NULL, AV_LOG_INFO,
1051                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1052                ist->file_index, ist->st->index,
1053                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1054                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1055         if(!ost->video_resample)
1056             ost->video_resample = 1;
1057     }
1058
1059 #if !CONFIG_AVFILTER
1060     if (ost->video_resample) {
1061         *out_picture = &ost->pict_tmp;
1062         if (resample_changed) {
1063             /* initialize a new scaler context */
1064             sws_freeContext(ost->img_resample_ctx);
1065             ost->img_resample_ctx = sws_getContext(
1066                 ist->st->codec->width,
1067                 ist->st->codec->height,
1068                 ist->st->codec->pix_fmt,
1069                 ost->st->codec->width,
1070                 ost->st->codec->height,
1071                 ost->st->codec->pix_fmt,
1072                 ost->sws_flags, NULL, NULL, NULL);
1073             if (ost->img_resample_ctx == NULL) {
1074                 fprintf(stderr, "Cannot get resampling context\n");
1075                 exit_program(1);
1076             }
1077         }
1078         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1079               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1080     }
1081 #else
1082     if (resample_changed) {
1083         avfilter_graph_free(&ost->graph);
1084         if (configure_video_filters(ist, ost)) {
1085             fprintf(stderr, "Error reinitialising filters!\n");
1086             exit_program(1);
1087         }
1088     }
1089 #endif
1090     if (resample_changed) {
1091         ost->resample_width   = dec->width;
1092         ost->resample_height  = dec->height;
1093         ost->resample_pix_fmt = dec->pix_fmt;
1094     }
1095 }
1096
1097
1098 static void do_video_out(AVFormatContext *s,
1099                          OutputStream *ost,
1100                          InputStream *ist,
1101                          AVFrame *in_picture,
1102                          int *frame_size, float quality)
1103 {
1104     int nb_frames, i, ret, format_video_sync;
1105     AVFrame *final_picture;
1106     AVCodecContext *enc, *dec;
1107     double sync_ipts;
1108
1109     enc = ost->st->codec;
1110     dec = ist->st->codec;
1111
1112     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1113
1114     /* by default, we output a single frame */
1115     nb_frames = 1;
1116
1117     *frame_size = 0;
1118
1119     format_video_sync = video_sync_method;
1120     if (format_video_sync < 0)
1121         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1122
1123     if (format_video_sync) {
1124         double vdelta = sync_ipts - ost->sync_opts;
1125         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1126         if (vdelta < -1.1)
1127             nb_frames = 0;
1128         else if (format_video_sync == 2) {
1129             if(vdelta<=-0.6){
1130                 nb_frames=0;
1131             }else if(vdelta>0.6)
1132                 ost->sync_opts= lrintf(sync_ipts);
1133         }else if (vdelta > 1.1)
1134             nb_frames = lrintf(vdelta);
1135 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1136         if (nb_frames == 0){
1137             ++nb_frames_drop;
1138             if (verbose>2)
1139                 fprintf(stderr, "*** drop!\n");
1140         }else if (nb_frames > 1) {
1141             nb_frames_dup += nb_frames - 1;
1142             if (verbose>2)
1143                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1144         }
1145     }else
1146         ost->sync_opts= lrintf(sync_ipts);
1147
1148     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1149     if (nb_frames <= 0)
1150         return;
1151
1152     do_video_resample(ost, ist, in_picture, &final_picture);
1153
1154     /* duplicates frame if needed */
1155     for(i=0;i<nb_frames;i++) {
1156         AVPacket pkt;
1157         av_init_packet(&pkt);
1158         pkt.stream_index= ost->index;
1159
1160         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1161             /* raw pictures are written as AVPicture structure to
1162                avoid any copies. We support temorarily the older
1163                method. */
1164             AVFrame* old_frame = enc->coded_frame;
1165             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1166             pkt.data= (uint8_t *)final_picture;
1167             pkt.size=  sizeof(AVPicture);
1168             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1169             pkt.flags |= AV_PKT_FLAG_KEY;
1170
1171             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1172             enc->coded_frame = old_frame;
1173         } else {
1174             AVFrame big_picture;
1175
1176             big_picture= *final_picture;
1177             /* better than nothing: use input picture interlaced
1178                settings */
1179             big_picture.interlaced_frame = in_picture->interlaced_frame;
1180             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1181                 if(top_field_first == -1)
1182                     big_picture.top_field_first = in_picture->top_field_first;
1183                 else
1184                     big_picture.top_field_first = top_field_first;
1185             }
1186
1187             /* handles same_quant here. This is not correct because it may
1188                not be a global option */
1189             big_picture.quality = quality;
1190             if(!me_threshold)
1191                 big_picture.pict_type = 0;
1192 //            big_picture.pts = AV_NOPTS_VALUE;
1193             big_picture.pts= ost->sync_opts;
1194 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1195 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1196             if (ost->forced_kf_index < ost->forced_kf_count &&
1197                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1198                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1199                 ost->forced_kf_index++;
1200             }
1201             ret = avcodec_encode_video(enc,
1202                                        bit_buffer, bit_buffer_size,
1203                                        &big_picture);
1204             if (ret < 0) {
1205                 fprintf(stderr, "Video encoding failed\n");
1206                 exit_program(1);
1207             }
1208
1209             if(ret>0){
1210                 pkt.data= bit_buffer;
1211                 pkt.size= ret;
1212                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1213                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1214 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1215    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1216    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1217
1218                 if(enc->coded_frame->key_frame)
1219                     pkt.flags |= AV_PKT_FLAG_KEY;
1220                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1221                 *frame_size = ret;
1222                 video_size += ret;
1223                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1224                 //        enc->frame_number-1, ret, enc->pict_type);
1225                 /* if two pass, output log */
1226                 if (ost->logfile && enc->stats_out) {
1227                     fprintf(ost->logfile, "%s", enc->stats_out);
1228                 }
1229             }
1230         }
1231         ost->sync_opts++;
1232         ost->frame_number++;
1233     }
1234 }
1235
1236 static double psnr(double d){
1237     return -10.0*log(d)/log(10.0);
1238 }
1239
1240 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1241                            int frame_size)
1242 {
1243     AVCodecContext *enc;
1244     int frame_number;
1245     double ti1, bitrate, avg_bitrate;
1246
1247     /* this is executed just the first time do_video_stats is called */
1248     if (!vstats_file) {
1249         vstats_file = fopen(vstats_filename, "w");
1250         if (!vstats_file) {
1251             perror("fopen");
1252             exit_program(1);
1253         }
1254     }
1255
1256     enc = ost->st->codec;
1257     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1258         frame_number = ost->frame_number;
1259         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1260         if (enc->flags&CODEC_FLAG_PSNR)
1261             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1262
1263         fprintf(vstats_file,"f_size= %6d ", frame_size);
1264         /* compute pts value */
1265         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1266         if (ti1 < 0.01)
1267             ti1 = 0.01;
1268
1269         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1270         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1271         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1272             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1273         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1274     }
1275 }
1276
1277 static void print_report(OutputFile *output_files,
1278                          OutputStream *ost_table, int nb_ostreams,
1279                          int is_last_report)
1280 {
1281     char buf[1024];
1282     OutputStream *ost;
1283     AVFormatContext *oc;
1284     int64_t total_size;
1285     AVCodecContext *enc;
1286     int frame_number, vid, i;
1287     double bitrate, ti1, pts;
1288     static int64_t last_time = -1;
1289     static int qp_histogram[52];
1290
1291     if (!is_last_report) {
1292         int64_t cur_time;
1293         /* display the report every 0.5 seconds */
1294         cur_time = av_gettime();
1295         if (last_time == -1) {
1296             last_time = cur_time;
1297             return;
1298         }
1299         if ((cur_time - last_time) < 500000)
1300             return;
1301         last_time = cur_time;
1302     }
1303
1304
1305     oc = output_files[0].ctx;
1306
1307     total_size = avio_size(oc->pb);
1308     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1309         total_size= avio_tell(oc->pb);
1310
1311     buf[0] = '\0';
1312     ti1 = 1e10;
1313     vid = 0;
1314     for(i=0;i<nb_ostreams;i++) {
1315         float q = -1;
1316         ost = &ost_table[i];
1317         enc = ost->st->codec;
1318         if (!ost->st->stream_copy && enc->coded_frame)
1319             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1320         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1321             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1322         }
1323         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1324             float t = (av_gettime()-timer_start) / 1000000.0;
1325
1326             frame_number = ost->frame_number;
1327             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1328                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1329             if(is_last_report)
1330                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1331             if(qp_hist){
1332                 int j;
1333                 int qp = lrintf(q);
1334                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1335                     qp_histogram[qp]++;
1336                 for(j=0; j<32; j++)
1337                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1338             }
1339             if (enc->flags&CODEC_FLAG_PSNR){
1340                 int j;
1341                 double error, error_sum=0;
1342                 double scale, scale_sum=0;
1343                 char type[3]= {'Y','U','V'};
1344                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1345                 for(j=0; j<3; j++){
1346                     if(is_last_report){
1347                         error= enc->error[j];
1348                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1349                     }else{
1350                         error= enc->coded_frame->error[j];
1351                         scale= enc->width*enc->height*255.0*255.0;
1352                     }
1353                     if(j) scale/=4;
1354                     error_sum += error;
1355                     scale_sum += scale;
1356                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1357                 }
1358                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1359             }
1360             vid = 1;
1361         }
1362         /* compute min output value */
1363         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1364         if ((pts < ti1) && (pts > 0))
1365             ti1 = pts;
1366     }
1367     if (ti1 < 0.01)
1368         ti1 = 0.01;
1369
1370     if (verbose > 0 || is_last_report) {
1371         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1372
1373         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1374             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1375             (double)total_size / 1024, ti1, bitrate);
1376
1377         if (nb_frames_dup || nb_frames_drop)
1378           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1379                   nb_frames_dup, nb_frames_drop);
1380
1381         if (verbose >= 0)
1382             fprintf(stderr, "%s    \r", buf);
1383
1384         fflush(stderr);
1385     }
1386
1387     if (is_last_report && verbose >= 0){
1388         int64_t raw= audio_size + video_size + extra_size;
1389         fprintf(stderr, "\n");
1390         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1391                 video_size/1024.0,
1392                 audio_size/1024.0,
1393                 extra_size/1024.0,
1394                 100.0*(total_size - raw)/raw
1395         );
1396     }
1397 }
1398
1399 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1400 {
1401     int fill_char = 0x00;
1402     if (sample_fmt == AV_SAMPLE_FMT_U8)
1403         fill_char = 0x80;
1404     memset(buf, fill_char, size);
1405 }
1406
1407 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1408 static int output_packet(InputStream *ist, int ist_index,
1409                          OutputStream *ost_table, int nb_ostreams,
1410                          const AVPacket *pkt)
1411 {
1412     AVFormatContext *os;
1413     OutputStream *ost;
1414     int ret, i;
1415     int got_output;
1416     AVFrame picture;
1417     void *buffer_to_free = NULL;
1418     static unsigned int samples_size= 0;
1419     AVSubtitle subtitle, *subtitle_to_free;
1420     int64_t pkt_pts = AV_NOPTS_VALUE;
1421 #if CONFIG_AVFILTER
1422     int frame_available;
1423 #endif
1424     float quality;
1425
1426     AVPacket avpkt;
1427     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1428
1429     if(ist->next_pts == AV_NOPTS_VALUE)
1430         ist->next_pts= ist->pts;
1431
1432     if (pkt == NULL) {
1433         /* EOF handling */
1434         av_init_packet(&avpkt);
1435         avpkt.data = NULL;
1436         avpkt.size = 0;
1437         goto handle_eof;
1438     } else {
1439         avpkt = *pkt;
1440     }
1441
1442     if(pkt->dts != AV_NOPTS_VALUE)
1443         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1444     if(pkt->pts != AV_NOPTS_VALUE)
1445         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1446
1447     //while we have more to decode or while the decoder did output something on EOF
1448     while (avpkt.size > 0 || (!pkt && got_output)) {
1449         uint8_t *data_buf, *decoded_data_buf;
1450         int data_size, decoded_data_size;
1451     handle_eof:
1452         ist->pts= ist->next_pts;
1453
1454         if(avpkt.size && avpkt.size != pkt->size &&
1455            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1456             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1457             ist->showed_multi_packet_warning=1;
1458         }
1459
1460         /* decode the packet if needed */
1461         decoded_data_buf = NULL; /* fail safe */
1462         decoded_data_size= 0;
1463         data_buf  = avpkt.data;
1464         data_size = avpkt.size;
1465         subtitle_to_free = NULL;
1466         if (ist->decoding_needed) {
1467             switch(ist->st->codec->codec_type) {
1468             case AVMEDIA_TYPE_AUDIO:{
1469                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1470                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1471                     av_free(samples);
1472                     samples= av_malloc(samples_size);
1473                 }
1474                 decoded_data_size= samples_size;
1475                     /* XXX: could avoid copy if PCM 16 bits with same
1476                        endianness as CPU */
1477                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1478                                             &avpkt);
1479                 if (ret < 0)
1480                     return ret;
1481                 avpkt.data += ret;
1482                 avpkt.size -= ret;
1483                 data_size   = ret;
1484                 got_output  = decoded_data_size > 0;
1485                 /* Some bug in mpeg audio decoder gives */
1486                 /* decoded_data_size < 0, it seems they are overflows */
1487                 if (!got_output) {
1488                     /* no audio frame */
1489                     continue;
1490                 }
1491                 decoded_data_buf = (uint8_t *)samples;
1492                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1493                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1494                 break;}
1495             case AVMEDIA_TYPE_VIDEO:
1496                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1497                     /* XXX: allocate picture correctly */
1498                     avcodec_get_frame_defaults(&picture);
1499                     avpkt.pts = pkt_pts;
1500                     avpkt.dts = ist->pts;
1501                     pkt_pts = AV_NOPTS_VALUE;
1502
1503                     ret = avcodec_decode_video2(ist->st->codec,
1504                                                 &picture, &got_output, &avpkt);
1505                     quality = same_quant ? picture.quality : 0;
1506                     if (ret < 0)
1507                         return ret;
1508                     if (!got_output) {
1509                         /* no picture yet */
1510                         goto discard_packet;
1511                     }
1512                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1513                     if (ist->st->codec->time_base.num != 0) {
1514                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1515                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1516                                           ist->st->codec->time_base.num * ticks) /
1517                             ist->st->codec->time_base.den;
1518                     }
1519                     avpkt.size = 0;
1520                     buffer_to_free = NULL;
1521                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1522                     break;
1523             case AVMEDIA_TYPE_SUBTITLE:
1524                 ret = avcodec_decode_subtitle2(ist->st->codec,
1525                                                &subtitle, &got_output, &avpkt);
1526                 if (ret < 0)
1527                     return ret;
1528                 if (!got_output) {
1529                     goto discard_packet;
1530                 }
1531                 subtitle_to_free = &subtitle;
1532                 avpkt.size = 0;
1533                 break;
1534             default:
1535                 return -1;
1536             }
1537         } else {
1538             switch(ist->st->codec->codec_type) {
1539             case AVMEDIA_TYPE_AUDIO:
1540                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1541                     ist->st->codec->sample_rate;
1542                 break;
1543             case AVMEDIA_TYPE_VIDEO:
1544                 if (ist->st->codec->time_base.num != 0) {
1545                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1546                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1547                                       ist->st->codec->time_base.num * ticks) /
1548                         ist->st->codec->time_base.den;
1549                 }
1550                 break;
1551             }
1552             ret = avpkt.size;
1553             avpkt.size = 0;
1554         }
1555
1556         // preprocess audio (volume)
1557         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1558             if (audio_volume != 256) {
1559                 short *volp;
1560                 volp = samples;
1561                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1562                     int v = ((*volp) * audio_volume + 128) >> 8;
1563                     if (v < -32768) v = -32768;
1564                     if (v >  32767) v = 32767;
1565                     *volp++ = v;
1566                 }
1567             }
1568         }
1569
1570         /* frame rate emulation */
1571         if (rate_emu) {
1572             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1573             int64_t now = av_gettime() - ist->start;
1574             if (pts > now)
1575                 usleep(pts - now);
1576         }
1577         /* if output time reached then transcode raw format,
1578            encode packets and output them */
1579         if (start_time == 0 || ist->pts >= start_time)
1580             for(i=0;i<nb_ostreams;i++) {
1581                 OutputFile *of = &output_files[ost_table[i].file_index];
1582                 int frame_size;
1583
1584                 ost = &ost_table[i];
1585                 if (ost->source_index != ist_index)
1586                     continue;
1587
1588                 if (of->recording_time != INT64_MAX &&
1589                     av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + start_time,
1590                                   (AVRational){1, 1000000}) >= 0) {
1591                     ost->is_past_recording_time = 1;
1592                     continue;
1593                 }
1594
1595 #if CONFIG_AVFILTER
1596                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1597                     ost->input_video_filter) {
1598                     AVRational sar;
1599                     if (ist->st->sample_aspect_ratio.num)
1600                         sar = ist->st->sample_aspect_ratio;
1601                     else
1602                         sar = ist->st->codec->sample_aspect_ratio;
1603                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, ist->pts, sar);
1604                 }
1605                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1606                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1607                 while (frame_available) {
1608                     AVRational ist_pts_tb;
1609                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1610                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1611                     if (ost->picref)
1612                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1613 #endif
1614                     os = output_files[ost->file_index].ctx;
1615
1616                     /* set the input output pts pairs */
1617                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1618
1619                     if (ost->encoding_needed) {
1620                         av_assert0(ist->decoding_needed);
1621                         switch(ost->st->codec->codec_type) {
1622                         case AVMEDIA_TYPE_AUDIO:
1623                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1624                             break;
1625                         case AVMEDIA_TYPE_VIDEO:
1626 #if CONFIG_AVFILTER
1627                             if (ost->picref->video && !ost->frame_aspect_ratio)
1628                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1629 #endif
1630                             do_video_out(os, ost, ist, &picture, &frame_size,
1631                                          same_quant ? quality : ost->st->codec->global_quality);
1632                             if (vstats_filename && frame_size)
1633                                 do_video_stats(os, ost, frame_size);
1634                             break;
1635                         case AVMEDIA_TYPE_SUBTITLE:
1636                             do_subtitle_out(os, ost, ist, &subtitle,
1637                                             pkt->pts);
1638                             break;
1639                         default:
1640                             abort();
1641                         }
1642                     } else {
1643                         AVFrame avframe; //FIXME/XXX remove this
1644                         AVPacket opkt;
1645                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1646
1647                         av_init_packet(&opkt);
1648
1649                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1650 #if !CONFIG_AVFILTER
1651                             continue;
1652 #else
1653                             goto cont;
1654 #endif
1655
1656                         /* no reencoding needed : output the packet directly */
1657                         /* force the input stream PTS */
1658
1659                         avcodec_get_frame_defaults(&avframe);
1660                         ost->st->codec->coded_frame= &avframe;
1661                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1662
1663                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1664                             audio_size += data_size;
1665                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1666                             video_size += data_size;
1667                             ost->sync_opts++;
1668                         }
1669
1670                         opkt.stream_index= ost->index;
1671                         if(pkt->pts != AV_NOPTS_VALUE)
1672                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1673                         else
1674                             opkt.pts= AV_NOPTS_VALUE;
1675
1676                         if (pkt->dts == AV_NOPTS_VALUE)
1677                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1678                         else
1679                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1680                         opkt.dts -= ost_tb_start_time;
1681
1682                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1683                         opkt.flags= pkt->flags;
1684
1685                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1686                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1687                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1688                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1689                            ) {
1690                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1691                                 opkt.destruct= av_destruct_packet;
1692                         } else {
1693                             opkt.data = data_buf;
1694                             opkt.size = data_size;
1695                         }
1696
1697                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1698                         ost->st->codec->frame_number++;
1699                         ost->frame_number++;
1700                         av_free_packet(&opkt);
1701                     }
1702 #if CONFIG_AVFILTER
1703                     cont:
1704                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1705                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1706                     if (ost->picref)
1707                         avfilter_unref_buffer(ost->picref);
1708                 }
1709 #endif
1710             }
1711
1712         av_free(buffer_to_free);
1713         /* XXX: allocate the subtitles in the codec ? */
1714         if (subtitle_to_free) {
1715             avsubtitle_free(subtitle_to_free);
1716             subtitle_to_free = NULL;
1717         }
1718     }
1719  discard_packet:
1720     if (pkt == NULL) {
1721         /* EOF handling */
1722
1723         for(i=0;i<nb_ostreams;i++) {
1724             ost = &ost_table[i];
1725             if (ost->source_index == ist_index) {
1726                 AVCodecContext *enc= ost->st->codec;
1727                 os = output_files[ost->file_index].ctx;
1728
1729                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1730                     continue;
1731                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1732                     continue;
1733
1734                 if (ost->encoding_needed) {
1735                     for(;;) {
1736                         AVPacket pkt;
1737                         int fifo_bytes;
1738                         av_init_packet(&pkt);
1739                         pkt.stream_index= ost->index;
1740
1741                         switch(ost->st->codec->codec_type) {
1742                         case AVMEDIA_TYPE_AUDIO:
1743                             fifo_bytes = av_fifo_size(ost->fifo);
1744                             ret = 0;
1745                             /* encode any samples remaining in fifo */
1746                             if (fifo_bytes > 0) {
1747                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1748                                 int fs_tmp = enc->frame_size;
1749
1750                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1751                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1752                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1753                                 } else { /* pad */
1754                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1755                                     if (allocated_audio_buf_size < frame_bytes)
1756                                         exit_program(1);
1757                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1758                                 }
1759
1760                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1761                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1762                                                           ost->st->time_base.num, enc->sample_rate);
1763                                 enc->frame_size = fs_tmp;
1764                             }
1765                             if(ret <= 0) {
1766                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1767                             }
1768                             if (ret < 0) {
1769                                 fprintf(stderr, "Audio encoding failed\n");
1770                                 exit_program(1);
1771                             }
1772                             audio_size += ret;
1773                             pkt.flags |= AV_PKT_FLAG_KEY;
1774                             break;
1775                         case AVMEDIA_TYPE_VIDEO:
1776                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1777                             if (ret < 0) {
1778                                 fprintf(stderr, "Video encoding failed\n");
1779                                 exit_program(1);
1780                             }
1781                             video_size += ret;
1782                             if(enc->coded_frame && enc->coded_frame->key_frame)
1783                                 pkt.flags |= AV_PKT_FLAG_KEY;
1784                             if (ost->logfile && enc->stats_out) {
1785                                 fprintf(ost->logfile, "%s", enc->stats_out);
1786                             }
1787                             break;
1788                         default:
1789                             ret=-1;
1790                         }
1791
1792                         if(ret<=0)
1793                             break;
1794                         pkt.data= bit_buffer;
1795                         pkt.size= ret;
1796                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1797                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1798                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1799                     }
1800                 }
1801             }
1802         }
1803     }
1804
1805     return 0;
1806 }
1807
1808 static void print_sdp(OutputFile *output_files, int n)
1809 {
1810     char sdp[2048];
1811     int i;
1812     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1813
1814     if (!avc)
1815         exit_program(1);
1816     for (i = 0; i < n; i++)
1817         avc[i] = output_files[i].ctx;
1818
1819     av_sdp_create(avc, n, sdp, sizeof(sdp));
1820     printf("SDP:\n%s\n", sdp);
1821     fflush(stdout);
1822     av_freep(&avc);
1823 }
1824
1825 /*
1826  * The following code is the main loop of the file converter
1827  */
1828 static int transcode(OutputFile *output_files,
1829                      int nb_output_files,
1830                      InputFile *input_files,
1831                      int nb_input_files)
1832 {
1833     int ret = 0, i, j;
1834     AVFormatContext *is, *os;
1835     AVCodecContext *codec, *icodec;
1836     OutputStream *ost;
1837     InputStream *ist;
1838     char error[1024];
1839     int want_sdp = 1;
1840     uint8_t *no_packet;
1841     int no_packet_count=0;
1842
1843     if (!(no_packet = av_mallocz(nb_input_files)))
1844         exit_program(1);
1845
1846     if (rate_emu)
1847         for (i = 0; i < nb_input_streams; i++)
1848             input_streams[i].start = av_gettime();
1849
1850     /* output stream init */
1851     for(i=0;i<nb_output_files;i++) {
1852         os = output_files[i].ctx;
1853         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1854             av_dump_format(os, i, os->filename, 1);
1855             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1856             ret = AVERROR(EINVAL);
1857             goto fail;
1858         }
1859     }
1860
1861     /* for each output stream, we compute the right encoding parameters */
1862     for (i = 0; i < nb_output_streams; i++) {
1863         ost = &output_streams[i];
1864         os = output_files[ost->file_index].ctx;
1865         ist = &input_streams[ost->source_index];
1866
1867         codec = ost->st->codec;
1868         icodec = ist->st->codec;
1869
1870         ost->st->disposition = ist->st->disposition;
1871         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1872         codec->chroma_sample_location = icodec->chroma_sample_location;
1873
1874         if (ost->st->stream_copy) {
1875             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1876
1877             if (extra_size > INT_MAX)
1878                 goto fail;
1879
1880             /* if stream_copy is selected, no need to decode or encode */
1881             codec->codec_id = icodec->codec_id;
1882             codec->codec_type = icodec->codec_type;
1883
1884             if(!codec->codec_tag){
1885                 if(   !os->oformat->codec_tag
1886                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1887                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1888                     codec->codec_tag = icodec->codec_tag;
1889             }
1890
1891             codec->bit_rate = icodec->bit_rate;
1892             codec->rc_max_rate    = icodec->rc_max_rate;
1893             codec->rc_buffer_size = icodec->rc_buffer_size;
1894             codec->extradata= av_mallocz(extra_size);
1895             if (!codec->extradata)
1896                 goto fail;
1897             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1898             codec->extradata_size= icodec->extradata_size;
1899             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
1900                 codec->time_base = icodec->time_base;
1901                 codec->time_base.num *= icodec->ticks_per_frame;
1902                 av_reduce(&codec->time_base.num, &codec->time_base.den,
1903                           codec->time_base.num, codec->time_base.den, INT_MAX);
1904             }else
1905                 codec->time_base = ist->st->time_base;
1906             switch(codec->codec_type) {
1907             case AVMEDIA_TYPE_AUDIO:
1908                 if(audio_volume != 256) {
1909                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1910                     exit_program(1);
1911                 }
1912                 codec->channel_layout = icodec->channel_layout;
1913                 codec->sample_rate = icodec->sample_rate;
1914                 codec->channels = icodec->channels;
1915                 codec->frame_size = icodec->frame_size;
1916                 codec->audio_service_type = icodec->audio_service_type;
1917                 codec->block_align= icodec->block_align;
1918                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1919                     codec->block_align= 0;
1920                 if(codec->codec_id == CODEC_ID_AC3)
1921                     codec->block_align= 0;
1922                 break;
1923             case AVMEDIA_TYPE_VIDEO:
1924                 codec->pix_fmt = icodec->pix_fmt;
1925                 codec->width = icodec->width;
1926                 codec->height = icodec->height;
1927                 codec->has_b_frames = icodec->has_b_frames;
1928                 if (!codec->sample_aspect_ratio.num) {
1929                     codec->sample_aspect_ratio =
1930                     ost->st->sample_aspect_ratio =
1931                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1932                         ist->st->codec->sample_aspect_ratio.num ?
1933                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1934                 }
1935                 break;
1936             case AVMEDIA_TYPE_SUBTITLE:
1937                 codec->width = icodec->width;
1938                 codec->height = icodec->height;
1939                 break;
1940             case AVMEDIA_TYPE_DATA:
1941                 break;
1942             default:
1943                 abort();
1944             }
1945         } else {
1946             if (!ost->enc)
1947                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
1948             switch(codec->codec_type) {
1949             case AVMEDIA_TYPE_AUDIO:
1950                 ost->fifo= av_fifo_alloc(1024);
1951                 if(!ost->fifo)
1952                     goto fail;
1953                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
1954                 if (!codec->sample_rate) {
1955                     codec->sample_rate = icodec->sample_rate;
1956                     if (icodec->lowres)
1957                         codec->sample_rate >>= icodec->lowres;
1958                 }
1959                 choose_sample_rate(ost->st, ost->enc);
1960                 codec->time_base = (AVRational){1, codec->sample_rate};
1961                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
1962                     codec->sample_fmt = icodec->sample_fmt;
1963                 choose_sample_fmt(ost->st, ost->enc);
1964                 if (!codec->channels)
1965                     codec->channels = icodec->channels;
1966                 codec->channel_layout = icodec->channel_layout;
1967                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
1968                     codec->channel_layout = 0;
1969                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
1970                 icodec->request_channels = codec->channels;
1971                 ist->decoding_needed = 1;
1972                 ost->encoding_needed = 1;
1973                 ost->resample_sample_fmt  = icodec->sample_fmt;
1974                 ost->resample_sample_rate = icodec->sample_rate;
1975                 ost->resample_channels    = icodec->channels;
1976                 break;
1977             case AVMEDIA_TYPE_VIDEO:
1978                 if (codec->pix_fmt == PIX_FMT_NONE)
1979                     codec->pix_fmt = icodec->pix_fmt;
1980                 choose_pixel_fmt(ost->st, ost->enc);
1981
1982                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
1983                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
1984                     exit_program(1);
1985                 }
1986
1987                 if (!codec->width || !codec->height) {
1988                     codec->width  = icodec->width;
1989                     codec->height = icodec->height;
1990                 }
1991
1992                 ost->video_resample = codec->width   != icodec->width  ||
1993                                       codec->height  != icodec->height ||
1994                                       codec->pix_fmt != icodec->pix_fmt;
1995                 if (ost->video_resample) {
1996 #if !CONFIG_AVFILTER
1997                     avcodec_get_frame_defaults(&ost->pict_tmp);
1998                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1999                                        codec->width, codec->height)) {
2000                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2001                         exit_program(1);
2002                     }
2003                     ost->img_resample_ctx = sws_getContext(
2004                         icodec->width,
2005                         icodec->height,
2006                         icodec->pix_fmt,
2007                         codec->width,
2008                         codec->height,
2009                         codec->pix_fmt,
2010                         ost->sws_flags, NULL, NULL, NULL);
2011                     if (ost->img_resample_ctx == NULL) {
2012                         fprintf(stderr, "Cannot get resampling context\n");
2013                         exit_program(1);
2014                     }
2015 #endif
2016                     codec->bits_per_raw_sample= 0;
2017                 }
2018
2019                 ost->resample_height = icodec->height;
2020                 ost->resample_width  = icodec->width;
2021                 ost->resample_pix_fmt= icodec->pix_fmt;
2022                 ost->encoding_needed = 1;
2023                 ist->decoding_needed = 1;
2024
2025                 if (!ost->frame_rate.num)
2026                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2027                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2028                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2029                     ost->frame_rate = ost->enc->supported_framerates[idx];
2030                 }
2031                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2032
2033 #if CONFIG_AVFILTER
2034                 if (configure_video_filters(ist, ost)) {
2035                     fprintf(stderr, "Error opening filters!\n");
2036                     exit(1);
2037                 }
2038 #endif
2039                 break;
2040             case AVMEDIA_TYPE_SUBTITLE:
2041                 ost->encoding_needed = 1;
2042                 ist->decoding_needed = 1;
2043                 break;
2044             default:
2045                 abort();
2046                 break;
2047             }
2048             /* two pass mode */
2049             if (ost->encoding_needed &&
2050                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2051                 char logfilename[1024];
2052                 FILE *f;
2053
2054                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2055                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2056                          i);
2057                 if (codec->flags & CODEC_FLAG_PASS1) {
2058                     f = fopen(logfilename, "wb");
2059                     if (!f) {
2060                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2061                         exit_program(1);
2062                     }
2063                     ost->logfile = f;
2064                 } else {
2065                     char  *logbuffer;
2066                     size_t logbuffer_size;
2067                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2068                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2069                         exit_program(1);
2070                     }
2071                     codec->stats_in = logbuffer;
2072                 }
2073             }
2074         }
2075         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2076             int size= codec->width * codec->height;
2077             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2078         }
2079     }
2080
2081     if (!bit_buffer)
2082         bit_buffer = av_malloc(bit_buffer_size);
2083     if (!bit_buffer) {
2084         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2085                 bit_buffer_size);
2086         ret = AVERROR(ENOMEM);
2087         goto fail;
2088     }
2089
2090     /* open each encoder */
2091     for (i = 0; i < nb_output_streams; i++) {
2092         ost = &output_streams[i];
2093         if (ost->encoding_needed) {
2094             AVCodec *codec = ost->enc;
2095             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2096             if (!codec) {
2097                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2098                          ost->st->codec->codec_id, ost->file_index, ost->index);
2099                 ret = AVERROR(EINVAL);
2100                 goto dump_format;
2101             }
2102             if (dec->subtitle_header) {
2103                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2104                 if (!ost->st->codec->subtitle_header) {
2105                     ret = AVERROR(ENOMEM);
2106                     goto dump_format;
2107                 }
2108                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2109                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2110             }
2111             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2112                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2113                         ost->file_index, ost->index);
2114                 ret = AVERROR(EINVAL);
2115                 goto dump_format;
2116             }
2117             assert_codec_experimental(ost->st->codec, 1);
2118             assert_avoptions(ost->opts);
2119             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2120                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2121                                              "It takes bits/s as argument, not kbits/s\n");
2122             extra_size += ost->st->codec->extradata_size;
2123         }
2124     }
2125
2126     /* open each decoder */
2127     for (i = 0; i < nb_input_streams; i++) {
2128         ist = &input_streams[i];
2129         if (ist->decoding_needed) {
2130             AVCodec *codec = ist->dec;
2131             if (!codec)
2132                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2133             if (!codec) {
2134                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2135                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2136                 ret = AVERROR(EINVAL);
2137                 goto dump_format;
2138             }
2139
2140             /* update requested sample format for the decoder based on the
2141                corresponding encoder sample format */
2142             for (j = 0; j < nb_output_streams; j++) {
2143                 ost = &output_streams[j];
2144                 if (ost->source_index == i) {
2145                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2146                     break;
2147                 }
2148             }
2149
2150             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2151                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2152                         ist->file_index, ist->st->index);
2153                 ret = AVERROR(EINVAL);
2154                 goto dump_format;
2155             }
2156             assert_codec_experimental(ist->st->codec, 0);
2157             assert_avoptions(ost->opts);
2158         }
2159     }
2160
2161     /* init pts */
2162     for (i = 0; i < nb_input_streams; i++) {
2163         AVStream *st;
2164         ist = &input_streams[i];
2165         st= ist->st;
2166         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2167         ist->next_pts = AV_NOPTS_VALUE;
2168         init_pts_correction(&ist->pts_ctx);
2169         ist->is_start = 1;
2170     }
2171
2172     /* open files and write file headers */
2173     for (i = 0; i < nb_output_files; i++) {
2174         os = output_files[i].ctx;
2175         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2176             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2177             ret = AVERROR(EINVAL);
2178             goto dump_format;
2179         }
2180         assert_avoptions(output_files[i].opts);
2181         if (strcmp(os->oformat->name, "rtp")) {
2182             want_sdp = 0;
2183         }
2184     }
2185
2186  dump_format:
2187     /* dump the file output parameters - cannot be done before in case
2188        of stream copy */
2189     for(i=0;i<nb_output_files;i++) {
2190         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2191     }
2192
2193     /* dump the stream mapping */
2194     if (verbose >= 0) {
2195         fprintf(stderr, "Stream mapping:\n");
2196         for (i = 0; i < nb_output_streams;i ++) {
2197             ost = &output_streams[i];
2198             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2199                     input_streams[ost->source_index].file_index,
2200                     input_streams[ost->source_index].st->index,
2201                     ost->file_index,
2202                     ost->index);
2203             if (ost->sync_ist != &input_streams[ost->source_index])
2204                 fprintf(stderr, " [sync #%d.%d]",
2205                         ost->sync_ist->file_index,
2206                         ost->sync_ist->st->index);
2207             if (ost->st->stream_copy)
2208                 fprintf(stderr, " (copy)");
2209             fprintf(stderr, "\n");
2210         }
2211     }
2212
2213     if (ret) {
2214         fprintf(stderr, "%s\n", error);
2215         goto fail;
2216     }
2217
2218     if (want_sdp) {
2219         print_sdp(output_files, nb_output_files);
2220     }
2221
2222     if (verbose >= 0)
2223         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2224     term_init();
2225
2226     timer_start = av_gettime();
2227
2228     for(; received_sigterm == 0;) {
2229         int file_index, ist_index;
2230         AVPacket pkt;
2231         int64_t ipts_min;
2232         double opts_min;
2233
2234     redo:
2235         ipts_min = INT64_MAX;
2236         opts_min= 1e100;
2237
2238         /* select the stream that we must read now by looking at the
2239            smallest output pts */
2240         file_index = -1;
2241         for (i = 0; i < nb_output_streams; i++) {
2242             int64_t ipts;
2243             double  opts;
2244             ost = &output_streams[i];
2245             os = output_files[ost->file_index].ctx;
2246             ist = &input_streams[ost->source_index];
2247             if(ost->is_past_recording_time || no_packet[ist->file_index])
2248                 continue;
2249                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2250             ipts = ist->pts;
2251             if (!input_files[ist->file_index].eof_reached){
2252                 if(ipts < ipts_min) {
2253                     ipts_min = ipts;
2254                     if(input_sync ) file_index = ist->file_index;
2255                 }
2256                 if(opts < opts_min) {
2257                     opts_min = opts;
2258                     if(!input_sync) file_index = ist->file_index;
2259                 }
2260             }
2261             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2262                 file_index= -1;
2263                 break;
2264             }
2265         }
2266         /* if none, if is finished */
2267         if (file_index < 0) {
2268             if(no_packet_count){
2269                 no_packet_count=0;
2270                 memset(no_packet, 0, nb_input_files);
2271                 usleep(10000);
2272                 continue;
2273             }
2274             break;
2275         }
2276
2277         /* finish if limit size exhausted */
2278         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0].ctx->pb))
2279             break;
2280
2281         /* read a frame from it and output it in the fifo */
2282         is = input_files[file_index].ctx;
2283         ret= av_read_frame(is, &pkt);
2284         if(ret == AVERROR(EAGAIN)){
2285             no_packet[file_index]=1;
2286             no_packet_count++;
2287             continue;
2288         }
2289         if (ret < 0) {
2290             input_files[file_index].eof_reached = 1;
2291             if (opt_shortest)
2292                 break;
2293             else
2294                 continue;
2295         }
2296
2297         no_packet_count=0;
2298         memset(no_packet, 0, nb_input_files);
2299
2300         if (do_pkt_dump) {
2301             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2302                              is->streams[pkt.stream_index]);
2303         }
2304         /* the following test is needed in case new streams appear
2305            dynamically in stream : we ignore them */
2306         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2307             goto discard_packet;
2308         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2309         ist = &input_streams[ist_index];
2310         if (ist->discard)
2311             goto discard_packet;
2312
2313         if (pkt.dts != AV_NOPTS_VALUE)
2314             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2315         if (pkt.pts != AV_NOPTS_VALUE)
2316             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2317
2318         if (ist->ts_scale) {
2319             if(pkt.pts != AV_NOPTS_VALUE)
2320                 pkt.pts *= ist->ts_scale;
2321             if(pkt.dts != AV_NOPTS_VALUE)
2322                 pkt.dts *= ist->ts_scale;
2323         }
2324
2325 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2326         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2327             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2328             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2329             int64_t delta= pkt_dts - ist->next_pts;
2330             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2331                 input_files[ist->file_index].ts_offset -= delta;
2332                 if (verbose > 2)
2333                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2334                             delta, input_files[ist->file_index].ts_offset);
2335                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2336                 if(pkt.pts != AV_NOPTS_VALUE)
2337                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2338             }
2339         }
2340
2341         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2342         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2343
2344             if (verbose >= 0)
2345                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2346                         ist->file_index, ist->st->index);
2347             if (exit_on_error)
2348                 exit_program(1);
2349             av_free_packet(&pkt);
2350             goto redo;
2351         }
2352
2353     discard_packet:
2354         av_free_packet(&pkt);
2355
2356         /* dump report by using the output first video and audio streams */
2357         print_report(output_files, output_streams, nb_output_streams, 0);
2358     }
2359
2360     /* at the end of stream, we must flush the decoder buffers */
2361     for (i = 0; i < nb_input_streams; i++) {
2362         ist = &input_streams[i];
2363         if (ist->decoding_needed) {
2364             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2365         }
2366     }
2367
2368     term_exit();
2369
2370     /* write the trailer if needed and close file */
2371     for(i=0;i<nb_output_files;i++) {
2372         os = output_files[i].ctx;
2373         av_write_trailer(os);
2374     }
2375
2376     /* dump report by using the first video and audio streams */
2377     print_report(output_files, output_streams, nb_output_streams, 1);
2378
2379     /* close each encoder */
2380     for (i = 0; i < nb_output_streams; i++) {
2381         ost = &output_streams[i];
2382         if (ost->encoding_needed) {
2383             av_freep(&ost->st->codec->stats_in);
2384             avcodec_close(ost->st->codec);
2385         }
2386 #if CONFIG_AVFILTER
2387         avfilter_graph_free(&ost->graph);
2388 #endif
2389     }
2390
2391     /* close each decoder */
2392     for (i = 0; i < nb_input_streams; i++) {
2393         ist = &input_streams[i];
2394         if (ist->decoding_needed) {
2395             avcodec_close(ist->st->codec);
2396         }
2397     }
2398
2399     /* finished ! */
2400     ret = 0;
2401
2402  fail:
2403     av_freep(&bit_buffer);
2404     av_freep(&no_packet);
2405
2406     if (output_streams) {
2407         for (i = 0; i < nb_output_streams; i++) {
2408             ost = &output_streams[i];
2409             if (ost) {
2410                 if (ost->st->stream_copy)
2411                     av_freep(&ost->st->codec->extradata);
2412                 if (ost->logfile) {
2413                     fclose(ost->logfile);
2414                     ost->logfile = NULL;
2415                 }
2416                 av_fifo_free(ost->fifo); /* works even if fifo is not
2417                                              initialized but set to zero */
2418                 av_freep(&ost->st->codec->subtitle_header);
2419                 av_free(ost->pict_tmp.data[0]);
2420                 av_free(ost->forced_kf_pts);
2421                 if (ost->video_resample)
2422                     sws_freeContext(ost->img_resample_ctx);
2423                 if (ost->resample)
2424                     audio_resample_close(ost->resample);
2425                 if (ost->reformat_ctx)
2426                     av_audio_convert_free(ost->reformat_ctx);
2427                 av_dict_free(&ost->opts);
2428             }
2429         }
2430     }
2431     return ret;
2432 }
2433
2434 static int opt_format(const char *opt, const char *arg)
2435 {
2436     last_asked_format = arg;
2437     return 0;
2438 }
2439
2440 static int opt_video_rc_override_string(const char *opt, const char *arg)
2441 {
2442     video_rc_override_string = arg;
2443     return 0;
2444 }
2445
2446 static int opt_me_threshold(const char *opt, const char *arg)
2447 {
2448     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2449     return 0;
2450 }
2451
2452 static int opt_verbose(const char *opt, const char *arg)
2453 {
2454     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2455     return 0;
2456 }
2457
2458 static int opt_frame_rate(const char *opt, const char *arg)
2459 {
2460     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2461         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2462         exit_program(1);
2463     }
2464     return 0;
2465 }
2466
2467 static int opt_frame_crop(const char *opt, const char *arg)
2468 {
2469     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2470     return AVERROR(EINVAL);
2471 }
2472
2473 static int opt_frame_size(const char *opt, const char *arg)
2474 {
2475     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2476         fprintf(stderr, "Incorrect frame size\n");
2477         return AVERROR(EINVAL);
2478     }
2479     return 0;
2480 }
2481
2482 static int opt_pad(const char *opt, const char *arg) {
2483     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2484     return -1;
2485 }
2486
2487 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2488 {
2489     if (strcmp(arg, "list")) {
2490         frame_pix_fmt = av_get_pix_fmt(arg);
2491         if (frame_pix_fmt == PIX_FMT_NONE) {
2492             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2493             return AVERROR(EINVAL);
2494         }
2495     } else {
2496         show_pix_fmts();
2497         exit_program(0);
2498     }
2499     return 0;
2500 }
2501
2502 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2503 {
2504     int x = 0, y = 0;
2505     double ar = 0;
2506     const char *p;
2507     char *end;
2508
2509     p = strchr(arg, ':');
2510     if (p) {
2511         x = strtol(arg, &end, 10);
2512         if (end == p)
2513             y = strtol(end+1, &end, 10);
2514         if (x > 0 && y > 0)
2515             ar = (double)x / (double)y;
2516     } else
2517         ar = strtod(arg, NULL);
2518
2519     if (!ar) {
2520         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2521         return AVERROR(EINVAL);
2522     }
2523     frame_aspect_ratio = ar;
2524     return 0;
2525 }
2526
2527 static int opt_metadata(const char *opt, const char *arg)
2528 {
2529     char *mid= strchr(arg, '=');
2530
2531     if(!mid){
2532         fprintf(stderr, "Missing =\n");
2533         exit_program(1);
2534     }
2535     *mid++= 0;
2536
2537     av_dict_set(&metadata, arg, mid, 0);
2538
2539     return 0;
2540 }
2541
2542 static int opt_qscale(const char *opt, const char *arg)
2543 {
2544     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2545     if (video_qscale == 0) {
2546         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2547         return AVERROR(EINVAL);
2548     }
2549     return 0;
2550 }
2551
2552 static int opt_top_field_first(const char *opt, const char *arg)
2553 {
2554     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2555     return 0;
2556 }
2557
2558 static int opt_thread_count(const char *opt, const char *arg)
2559 {
2560     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2561 #if !HAVE_THREADS
2562     if (verbose >= 0)
2563         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2564 #endif
2565     return 0;
2566 }
2567
2568 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2569 {
2570     if (strcmp(arg, "list")) {
2571         audio_sample_fmt = av_get_sample_fmt(arg);
2572         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2573             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2574             return AVERROR(EINVAL);
2575         }
2576     } else {
2577         int i;
2578         char fmt_str[128];
2579         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2580             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2581         exit_program(0);
2582     }
2583     return 0;
2584 }
2585
2586 static int opt_audio_rate(const char *opt, const char *arg)
2587 {
2588     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2589     return 0;
2590 }
2591
2592 static int opt_audio_channels(const char *opt, const char *arg)
2593 {
2594     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2595     return 0;
2596 }
2597
2598 static int opt_codec(const char *opt, const char *arg)
2599 {
2600     return av_dict_set(&codec_names, opt, arg, 0);
2601 }
2602
2603 static int opt_audio_codec(const char *opt, const char *arg)
2604 {
2605     return opt_codec("codec:a", arg);
2606 }
2607
2608 static int opt_video_codec(const char *opt, const char *arg)
2609 {
2610     return opt_codec("codec:v", arg);
2611 }
2612
2613 static int opt_subtitle_codec(const char *opt, const char *arg)
2614 {
2615     return opt_codec("codec:s", arg);
2616 }
2617
2618 static int opt_data_codec(const char *opt, const char *arg)
2619 {
2620     return opt_codec("codec:d", arg);
2621 }
2622
2623 static int opt_codec_tag(const char *opt, const char *arg)
2624 {
2625     char *tail;
2626     uint32_t *codec_tag;
2627
2628     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2629                 !strcmp(opt, "vtag") ? &video_codec_tag :
2630                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2631     if (!codec_tag)
2632         return -1;
2633
2634     *codec_tag = strtol(arg, &tail, 0);
2635     if (!tail || *tail)
2636         *codec_tag = AV_RL32(arg);
2637
2638     return 0;
2639 }
2640
2641 static int opt_map(const char *opt, const char *arg)
2642 {
2643     StreamMap *m = NULL;
2644     int i, negative = 0, file_idx;
2645     int sync_file_idx = -1, sync_stream_idx;
2646     char *p, *sync;
2647     char *map;
2648
2649     if (*arg == '-') {
2650         negative = 1;
2651         arg++;
2652     }
2653     map = av_strdup(arg);
2654
2655     /* parse sync stream first, just pick first matching stream */
2656     if (sync = strchr(map, ',')) {
2657         *sync = 0;
2658         sync_file_idx = strtol(sync + 1, &sync, 0);
2659         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2660             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2661             exit_program(1);
2662         }
2663         if (*sync)
2664             sync++;
2665         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2666             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2667                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2668                 sync_stream_idx = i;
2669                 break;
2670             }
2671         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2672             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2673                                        "match any streams.\n", arg);
2674             exit_program(1);
2675         }
2676     }
2677
2678
2679     file_idx = strtol(map, &p, 0);
2680     if (file_idx >= nb_input_files || file_idx < 0) {
2681         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2682         exit_program(1);
2683     }
2684     if (negative)
2685         /* disable some already defined maps */
2686         for (i = 0; i < nb_stream_maps; i++) {
2687             m = &stream_maps[i];
2688             if (check_stream_specifier(input_files[m->file_index].ctx,
2689                                        input_files[m->file_index].ctx->streams[m->stream_index],
2690                                        *p == ':' ? p + 1 : p) > 0)
2691                 m->disabled = 1;
2692         }
2693     else
2694         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2695             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2696                         *p == ':' ? p + 1 : p) <= 0)
2697                 continue;
2698             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2699             m = &stream_maps[nb_stream_maps - 1];
2700
2701             m->file_index   = file_idx;
2702             m->stream_index = i;
2703
2704             if (sync_file_idx >= 0) {
2705                 m->sync_file_index   = sync_file_idx;
2706                 m->sync_stream_index = sync_stream_idx;
2707             } else {
2708                 m->sync_file_index   = file_idx;
2709                 m->sync_stream_index = i;
2710             }
2711         }
2712
2713     if (!m) {
2714         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2715         exit_program(1);
2716     }
2717
2718     av_freep(&map);
2719     return 0;
2720 }
2721
2722 static void parse_meta_type(char *arg, char *type, int *index)
2723 {
2724     if (*arg == ':') {
2725         *type = *(++arg);
2726         switch (*arg) {
2727         case 'g':
2728             break;
2729         case 's':
2730         case 'c':
2731         case 'p':
2732             if (*(++arg) == ':')
2733                 *index = strtol(++arg, NULL, 0);
2734             break;
2735         default:
2736             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2737             exit_program(1);
2738         }
2739     } else
2740         *type = 'g';
2741 }
2742
2743 static int opt_map_metadata(const char *opt, const char *arg)
2744 {
2745     MetadataMap *m, *m1;
2746     char *p;
2747
2748     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2749                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2750
2751     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2752     m->file = strtol(arg, &p, 0);
2753     parse_meta_type(p, &m->type, &m->index);
2754
2755     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2756     if (p = strchr(opt, ':'))
2757         parse_meta_type(p, &m1->type, &m1->index);
2758     else
2759         m1->type = 'g';
2760
2761     if (m->type == 'g' || m1->type == 'g')
2762         metadata_global_autocopy = 0;
2763     if (m->type == 's' || m1->type == 's')
2764         metadata_streams_autocopy = 0;
2765     if (m->type == 'c' || m1->type == 'c')
2766         metadata_chapters_autocopy = 0;
2767
2768     return 0;
2769 }
2770
2771 static int opt_input_ts_scale(const char *opt, const char *arg)
2772 {
2773     return av_dict_set(&ts_scale, opt, arg, 0);
2774 }
2775
2776 static int opt_recording_time(const char *opt, const char *arg)
2777 {
2778     recording_time = parse_time_or_die(opt, arg, 1);
2779     return 0;
2780 }
2781
2782 static int opt_start_time(const char *opt, const char *arg)
2783 {
2784     start_time = parse_time_or_die(opt, arg, 1);
2785     return 0;
2786 }
2787
2788 static int opt_input_ts_offset(const char *opt, const char *arg)
2789 {
2790     input_ts_offset = parse_time_or_die(opt, arg, 1);
2791     return 0;
2792 }
2793
2794 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2795 {
2796     const char *codec_string = encoder ? "encoder" : "decoder";
2797     AVCodec *codec;
2798
2799     if(!name)
2800         return CODEC_ID_NONE;
2801     codec = encoder ?
2802         avcodec_find_encoder_by_name(name) :
2803         avcodec_find_decoder_by_name(name);
2804     if(!codec) {
2805         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2806         exit_program(1);
2807     }
2808     if(codec->type != type) {
2809         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2810         exit_program(1);
2811     }
2812     return codec->id;
2813 }
2814
2815 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2816 {
2817     AVDictionaryEntry *e = NULL;
2818     char *codec_name = NULL;
2819     int ret;
2820
2821     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2822         char *p = strchr(e->key, ':');
2823
2824         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2825             codec_name = e->value;
2826         else if (ret < 0)
2827             exit_program(1);
2828     }
2829
2830     if (!codec_name) {
2831         if (s->oformat) {
2832             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2833             return avcodec_find_encoder(st->codec->codec_id);
2834         }
2835     } else if (!strcmp(codec_name, "copy"))
2836         st->stream_copy = 1;
2837     else {
2838         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2839         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2840                             avcodec_find_decoder_by_name(codec_name);
2841     }
2842
2843     return NULL;
2844 }
2845
2846 /**
2847  * Add all the streams from the given input file to the global
2848  * list of input streams.
2849  */
2850 static void add_input_streams(AVFormatContext *ic)
2851 {
2852     int i, rfps, rfps_base, ret;
2853
2854     for (i = 0; i < ic->nb_streams; i++) {
2855         AVStream *st = ic->streams[i];
2856         AVCodecContext *dec = st->codec;
2857         AVDictionaryEntry *e = NULL;
2858         InputStream *ist;
2859         char *scale = NULL;
2860
2861         dec->thread_count = thread_count;
2862
2863         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2864         ist = &input_streams[nb_input_streams - 1];
2865         ist->st = st;
2866         ist->file_index = nb_input_files;
2867         ist->discard = 1;
2868         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2869
2870         while (e = av_dict_get(ts_scale, "", e, AV_DICT_IGNORE_SUFFIX)) {
2871             char *p = strchr(e->key, ':');
2872
2873             if ((ret = check_stream_specifier(ic, st, p ? p + 1 : "")) > 0)
2874                 scale = e->value;
2875             else if (ret < 0)
2876                 exit_program(1);
2877         }
2878         if (scale)
2879             ist->ts_scale = strtod(scale, NULL);
2880
2881         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
2882
2883         switch (dec->codec_type) {
2884         case AVMEDIA_TYPE_AUDIO:
2885             if(audio_disable)
2886                 st->discard= AVDISCARD_ALL;
2887             break;
2888         case AVMEDIA_TYPE_VIDEO:
2889             rfps      = ic->streams[i]->r_frame_rate.num;
2890             rfps_base = ic->streams[i]->r_frame_rate.den;
2891             if (dec->lowres) {
2892                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2893                 dec->height >>= dec->lowres;
2894                 dec->width  >>= dec->lowres;
2895             }
2896             if(me_threshold)
2897                 dec->debug |= FF_DEBUG_MV;
2898
2899             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2900
2901                 if (verbose >= 0)
2902                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2903                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2904
2905                     (float)rfps / rfps_base, rfps, rfps_base);
2906             }
2907
2908             if(video_disable)
2909                 st->discard= AVDISCARD_ALL;
2910             else if(video_discard)
2911                 st->discard= video_discard;
2912             break;
2913         case AVMEDIA_TYPE_DATA:
2914             break;
2915         case AVMEDIA_TYPE_SUBTITLE:
2916             if(subtitle_disable)
2917                 st->discard = AVDISCARD_ALL;
2918             break;
2919         case AVMEDIA_TYPE_ATTACHMENT:
2920         case AVMEDIA_TYPE_UNKNOWN:
2921             break;
2922         default:
2923             abort();
2924         }
2925     }
2926 }
2927
2928 static int opt_input_file(const char *opt, const char *filename)
2929 {
2930     AVFormatContext *ic;
2931     AVInputFormat *file_iformat = NULL;
2932     int err, i, ret;
2933     int64_t timestamp;
2934     uint8_t buf[128];
2935     AVDictionary **opts;
2936     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2937
2938     if (last_asked_format) {
2939         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2940             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2941             exit_program(1);
2942         }
2943         last_asked_format = NULL;
2944     }
2945
2946     if (!strcmp(filename, "-"))
2947         filename = "pipe:";
2948
2949     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2950                     !strcmp(filename, "/dev/stdin");
2951
2952     /* get default parameters from command line */
2953     ic = avformat_alloc_context();
2954     if (!ic) {
2955         print_error(filename, AVERROR(ENOMEM));
2956         exit_program(1);
2957     }
2958     if (audio_sample_rate) {
2959         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
2960         av_dict_set(&format_opts, "sample_rate", buf, 0);
2961     }
2962     if (audio_channels) {
2963         snprintf(buf, sizeof(buf), "%d", audio_channels);
2964         av_dict_set(&format_opts, "channels", buf, 0);
2965     }
2966     if (frame_rate.num) {
2967         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
2968         av_dict_set(&format_opts, "framerate", buf, 0);
2969     }
2970     if (frame_width && frame_height) {
2971         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
2972         av_dict_set(&format_opts, "video_size", buf, 0);
2973     }
2974     if (frame_pix_fmt != PIX_FMT_NONE)
2975         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
2976
2977     ic->flags |= AVFMT_FLAG_NONBLOCK;
2978
2979     /* open the input file with generic libav function */
2980     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2981     if (err < 0) {
2982         print_error(filename, err);
2983         exit_program(1);
2984     }
2985     assert_avoptions(format_opts);
2986
2987     if(opt_programid) {
2988         int i, j;
2989         int found=0;
2990         for(i=0; i<ic->nb_streams; i++){
2991             ic->streams[i]->discard= AVDISCARD_ALL;
2992         }
2993         for(i=0; i<ic->nb_programs; i++){
2994             AVProgram *p= ic->programs[i];
2995             if(p->id != opt_programid){
2996                 p->discard = AVDISCARD_ALL;
2997             }else{
2998                 found=1;
2999                 for(j=0; j<p->nb_stream_indexes; j++){
3000                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3001                 }
3002             }
3003         }
3004         if(!found){
3005             fprintf(stderr, "Specified program id not found\n");
3006             exit_program(1);
3007         }
3008         opt_programid=0;
3009     }
3010
3011     /* apply forced codec ids */
3012     for (i = 0; i < ic->nb_streams; i++)
3013         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3014
3015     /* Set AVCodecContext options for avformat_find_stream_info */
3016     opts = setup_find_stream_info_opts(ic, codec_opts);
3017     orig_nb_streams = ic->nb_streams;
3018
3019     /* If not enough info to get the stream parameters, we decode the
3020        first frames to get it. (used in mpeg case for example) */
3021     ret = avformat_find_stream_info(ic, opts);
3022     if (ret < 0 && verbose >= 0) {
3023         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3024         av_close_input_file(ic);
3025         exit_program(1);
3026     }
3027
3028     timestamp = start_time;
3029     /* add the stream start time */
3030     if (ic->start_time != AV_NOPTS_VALUE)
3031         timestamp += ic->start_time;
3032
3033     /* if seeking requested, we execute it */
3034     if (start_time != 0) {
3035         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3036         if (ret < 0) {
3037             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3038                     filename, (double)timestamp / AV_TIME_BASE);
3039         }
3040         /* reset seek info */
3041         start_time = 0;
3042     }
3043
3044     /* update the current parameters so that they match the one of the input stream */
3045     add_input_streams(ic);
3046
3047     /* dump the file content */
3048     if (verbose >= 0)
3049         av_dump_format(ic, nb_input_files, filename, 0);
3050
3051     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3052     input_files[nb_input_files - 1].ctx        = ic;
3053     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3054     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3055
3056     frame_rate    = (AVRational){0, 0};
3057     frame_pix_fmt = PIX_FMT_NONE;
3058     frame_height = 0;
3059     frame_width  = 0;
3060     audio_sample_rate = 0;
3061     audio_channels    = 0;
3062     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3063     av_dict_free(&ts_scale);
3064
3065     for (i = 0; i < orig_nb_streams; i++)
3066         av_dict_free(&opts[i]);
3067     av_freep(&opts);
3068     av_dict_free(&codec_names);
3069     uninit_opts();
3070     init_opts();
3071     return 0;
3072 }
3073
3074 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3075                                     AVCodecContext *avctx)
3076 {
3077     char *p;
3078     int n = 1, i;
3079     int64_t t;
3080
3081     for (p = kf; *p; p++)
3082         if (*p == ',')
3083             n++;
3084     ost->forced_kf_count = n;
3085     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3086     if (!ost->forced_kf_pts) {
3087         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3088         exit_program(1);
3089     }
3090     for (i = 0; i < n; i++) {
3091         p = i ? strchr(p, ',') + 1 : kf;
3092         t = parse_time_or_die("force_key_frames", p, 1);
3093         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3094     }
3095 }
3096
3097 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3098 {
3099     OutputStream *ost;
3100     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3101     int idx      = oc->nb_streams - 1;
3102
3103     if (!st) {
3104         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3105         exit_program(1);
3106     }
3107
3108     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3109                                 nb_output_streams + 1);
3110     ost = &output_streams[nb_output_streams - 1];
3111     ost->file_index = nb_output_files;
3112     ost->index = idx;
3113     ost->st    = st;
3114     st->codec->codec_type = type;
3115     ost->enc = choose_codec(oc, st, type, codec_names);
3116     if (ost->enc) {
3117         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3118     }
3119
3120     avcodec_get_context_defaults3(st->codec, ost->enc);
3121     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3122
3123     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3124     return ost;
3125 }
3126
3127 static OutputStream *new_video_stream(AVFormatContext *oc)
3128 {
3129     AVStream *st;
3130     OutputStream *ost;
3131     AVCodecContext *video_enc;
3132
3133     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3134     st  = ost->st;
3135     if (!st->stream_copy) {
3136         ost->frame_aspect_ratio = frame_aspect_ratio;
3137         frame_aspect_ratio = 0;
3138 #if CONFIG_AVFILTER
3139         ost->avfilter= vfilters;
3140         vfilters = NULL;
3141 #endif
3142     }
3143
3144     ost->bitstream_filters = video_bitstream_filters;
3145     video_bitstream_filters= NULL;
3146
3147     st->codec->thread_count= thread_count;
3148
3149     video_enc = st->codec;
3150
3151     if(video_codec_tag)
3152         video_enc->codec_tag= video_codec_tag;
3153
3154     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3155         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3156     }
3157
3158     if (st->stream_copy) {
3159         video_enc->sample_aspect_ratio =
3160         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3161     } else {
3162         const char *p;
3163         int i;
3164
3165         if (frame_rate.num)
3166             ost->frame_rate = frame_rate;
3167
3168         video_enc->width = frame_width;
3169         video_enc->height = frame_height;
3170         video_enc->pix_fmt = frame_pix_fmt;
3171         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3172
3173         if (intra_only)
3174             video_enc->gop_size = 0;
3175         if (video_qscale || same_quant) {
3176             video_enc->flags |= CODEC_FLAG_QSCALE;
3177             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3178         }
3179
3180         if(intra_matrix)
3181             video_enc->intra_matrix = intra_matrix;
3182         if(inter_matrix)
3183             video_enc->inter_matrix = inter_matrix;
3184
3185         p= video_rc_override_string;
3186         for(i=0; p; i++){
3187             int start, end, q;
3188             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3189             if(e!=3){
3190                 fprintf(stderr, "error parsing rc_override\n");
3191                 exit_program(1);
3192             }
3193             video_enc->rc_override=
3194                 av_realloc(video_enc->rc_override,
3195                            sizeof(RcOverride)*(i+1));
3196             video_enc->rc_override[i].start_frame= start;
3197             video_enc->rc_override[i].end_frame  = end;
3198             if(q>0){
3199                 video_enc->rc_override[i].qscale= q;
3200                 video_enc->rc_override[i].quality_factor= 1.0;
3201             }
3202             else{
3203                 video_enc->rc_override[i].qscale= 0;
3204                 video_enc->rc_override[i].quality_factor= -q/100.0;
3205             }
3206             p= strchr(p, '/');
3207             if(p) p++;
3208         }
3209         video_enc->rc_override_count=i;
3210         if (!video_enc->rc_initial_buffer_occupancy)
3211             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3212         video_enc->me_threshold= me_threshold;
3213         video_enc->intra_dc_precision= intra_dc_precision - 8;
3214
3215         if (do_psnr)
3216             video_enc->flags|= CODEC_FLAG_PSNR;
3217
3218         /* two pass mode */
3219         if (do_pass) {
3220             if (do_pass == 1) {
3221                 video_enc->flags |= CODEC_FLAG_PASS1;
3222             } else {
3223                 video_enc->flags |= CODEC_FLAG_PASS2;
3224             }
3225         }
3226
3227         if (forced_key_frames)
3228             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3229     }
3230     if (video_language) {
3231         av_dict_set(&st->metadata, "language", video_language, 0);
3232         av_freep(&video_language);
3233     }
3234
3235     /* reset some key parameters */
3236     video_disable = 0;
3237     av_freep(&forced_key_frames);
3238     frame_pix_fmt = PIX_FMT_NONE;
3239     return ost;
3240 }
3241
3242 static OutputStream *new_audio_stream(AVFormatContext *oc)
3243 {
3244     AVStream *st;
3245     OutputStream *ost;
3246     AVCodecContext *audio_enc;
3247
3248     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3249     st  = ost->st;
3250
3251     ost->bitstream_filters = audio_bitstream_filters;
3252     audio_bitstream_filters= NULL;
3253
3254     st->codec->thread_count= thread_count;
3255
3256     audio_enc = st->codec;
3257     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3258
3259     if(audio_codec_tag)
3260         audio_enc->codec_tag= audio_codec_tag;
3261
3262     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3263         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3264     }
3265     if (!st->stream_copy) {
3266         if (audio_qscale > QSCALE_NONE) {
3267             audio_enc->flags |= CODEC_FLAG_QSCALE;
3268             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3269         }
3270         if (audio_channels)
3271             audio_enc->channels = audio_channels;
3272         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3273             audio_enc->sample_fmt = audio_sample_fmt;
3274         if (audio_sample_rate)
3275             audio_enc->sample_rate = audio_sample_rate;
3276     }
3277     if (audio_language) {
3278         av_dict_set(&st->metadata, "language", audio_language, 0);
3279         av_freep(&audio_language);
3280     }
3281
3282     /* reset some key parameters */
3283     audio_disable = 0;
3284
3285     return ost;
3286 }
3287
3288 static OutputStream *new_data_stream(AVFormatContext *oc)
3289 {
3290     AVStream *st;
3291     OutputStream *ost;
3292     AVCodecContext *data_enc;
3293
3294     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3295     st  = ost->st;
3296     data_enc = st->codec;
3297     if (!st->stream_copy) {
3298         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3299         exit_program(1);
3300     }
3301
3302     if (data_codec_tag)
3303         data_enc->codec_tag= data_codec_tag;
3304
3305     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3306         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3307     }
3308
3309     data_disable = 0;
3310     return ost;
3311 }
3312
3313 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3314 {
3315     AVStream *st;
3316     OutputStream *ost;
3317     AVCodecContext *subtitle_enc;
3318
3319     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3320     st  = ost->st;
3321     subtitle_enc = st->codec;
3322
3323     ost->bitstream_filters = subtitle_bitstream_filters;
3324     subtitle_bitstream_filters= NULL;
3325
3326     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3327
3328     if(subtitle_codec_tag)
3329         subtitle_enc->codec_tag= subtitle_codec_tag;
3330
3331     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3332         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3333     }
3334
3335     if (subtitle_language) {
3336         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3337         av_freep(&subtitle_language);
3338     }
3339
3340     subtitle_disable = 0;
3341     return ost;
3342 }
3343
3344 /* arg format is "output-stream-index:streamid-value". */
3345 static int opt_streamid(const char *opt, const char *arg)
3346 {
3347     int idx;
3348     char *p;
3349     char idx_str[16];
3350
3351     av_strlcpy(idx_str, arg, sizeof(idx_str));
3352     p = strchr(idx_str, ':');
3353     if (!p) {
3354         fprintf(stderr,
3355                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3356                 arg, opt);
3357         exit_program(1);
3358     }
3359     *p++ = '\0';
3360     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3361     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3362     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3363     return 0;
3364 }
3365
3366 static int copy_chapters(int infile, int outfile)
3367 {
3368     AVFormatContext *is = input_files[infile].ctx;
3369     AVFormatContext *os = output_files[outfile].ctx;
3370     int i;
3371
3372     for (i = 0; i < is->nb_chapters; i++) {
3373         AVChapter *in_ch = is->chapters[i], *out_ch;
3374         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3375                                       AV_TIME_BASE_Q, in_ch->time_base);
3376         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3377                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3378
3379
3380         if (in_ch->end < ts_off)
3381             continue;
3382         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3383             break;
3384
3385         out_ch = av_mallocz(sizeof(AVChapter));
3386         if (!out_ch)
3387             return AVERROR(ENOMEM);
3388
3389         out_ch->id        = in_ch->id;
3390         out_ch->time_base = in_ch->time_base;
3391         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3392         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3393
3394         if (metadata_chapters_autocopy)
3395             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3396
3397         os->nb_chapters++;
3398         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3399         if (!os->chapters)
3400             return AVERROR(ENOMEM);
3401         os->chapters[os->nb_chapters - 1] = out_ch;
3402     }
3403     return 0;
3404 }
3405
3406 static int read_avserver_streams(AVFormatContext *s, const char *filename)
3407 {
3408     int i, err;
3409     AVFormatContext *ic = NULL;
3410
3411     err = avformat_open_input(&ic, filename, NULL, NULL);
3412     if (err < 0)
3413         return err;
3414     /* copy stream format */
3415     for(i=0;i<ic->nb_streams;i++) {
3416         AVStream *st;
3417         OutputStream *ost;
3418         AVCodec *codec;
3419
3420         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3421         ost   = new_output_stream(s, codec->type);
3422         st    = ost->st;
3423
3424         // FIXME: a more elegant solution is needed
3425         memcpy(st, ic->streams[i], sizeof(AVStream));
3426         st->info = NULL;
3427         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3428
3429         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3430             choose_sample_fmt(st, codec);
3431         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3432             choose_pixel_fmt(st, codec);
3433     }
3434
3435     av_close_input_file(ic);
3436     return 0;
3437 }
3438
3439 static void opt_output_file(const char *filename)
3440 {
3441     AVFormatContext *oc;
3442     int i, err;
3443     AVOutputFormat *file_oformat;
3444     OutputStream *ost;
3445     InputStream  *ist;
3446
3447     if (!strcmp(filename, "-"))
3448         filename = "pipe:";
3449
3450     oc = avformat_alloc_context();
3451     if (!oc) {
3452         print_error(filename, AVERROR(ENOMEM));
3453         exit_program(1);
3454     }
3455
3456     if (last_asked_format) {
3457         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3458         if (!file_oformat) {
3459             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3460             exit_program(1);
3461         }
3462         last_asked_format = NULL;
3463     } else {
3464         file_oformat = av_guess_format(NULL, filename, NULL);
3465         if (!file_oformat) {
3466             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3467                     filename);
3468             exit_program(1);
3469         }
3470     }
3471
3472     oc->oformat = file_oformat;
3473     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3474
3475     if (!strcmp(file_oformat->name, "ffm") &&
3476         av_strstart(filename, "http:", NULL)) {
3477         /* special case for files sent to avserver: we get the stream
3478            parameters from avserver */
3479         int err = read_avserver_streams(oc, filename);
3480         if (err < 0) {
3481             print_error(filename, err);
3482             exit_program(1);
3483         }
3484     } else if (!nb_stream_maps) {
3485         /* pick the "best" stream of each type */
3486 #define NEW_STREAM(type, index)\
3487         if (index >= 0) {\
3488             ost = new_ ## type ## _stream(oc);\
3489             ost->source_index = index;\
3490             ost->sync_ist     = &input_streams[index];\
3491             input_streams[index].discard = 0;\
3492         }
3493
3494         /* video: highest resolution */
3495         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3496             int area = 0, idx = -1;
3497             for (i = 0; i < nb_input_streams; i++) {
3498                 ist = &input_streams[i];
3499                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3500                     ist->st->codec->width * ist->st->codec->height > area) {
3501                     area = ist->st->codec->width * ist->st->codec->height;
3502                     idx = i;
3503                 }
3504             }
3505             NEW_STREAM(video, idx);
3506         }
3507
3508         /* audio: most channels */
3509         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3510             int channels = 0, idx = -1;
3511             for (i = 0; i < nb_input_streams; i++) {
3512                 ist = &input_streams[i];
3513                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3514                     ist->st->codec->channels > channels) {
3515                     channels = ist->st->codec->channels;
3516                     idx = i;
3517                 }
3518             }
3519             NEW_STREAM(audio, idx);
3520         }
3521
3522         /* subtitles: pick first */
3523         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3524             for (i = 0; i < nb_input_streams; i++)
3525                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3526                     NEW_STREAM(subtitle, i);
3527                     break;
3528                 }
3529         }
3530         /* do something with data? */
3531     } else {
3532         for (i = 0; i < nb_stream_maps; i++) {
3533             StreamMap *map = &stream_maps[i];
3534
3535             if (map->disabled)
3536                 continue;
3537
3538             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3539             switch (ist->st->codec->codec_type) {
3540             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc);    break;
3541             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc);    break;
3542             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc); break;
3543             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc);     break;
3544             default:
3545                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3546                        map->file_index, map->stream_index);
3547                 exit_program(1);
3548             }
3549
3550             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3551             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3552                                            map->sync_stream_index];
3553             ist->discard = 0;
3554         }
3555     }
3556
3557     av_dict_copy(&oc->metadata, metadata, 0);
3558     av_dict_free(&metadata);
3559
3560
3561     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3562     output_files[nb_output_files - 1].ctx       = oc;
3563     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3564     output_files[nb_output_files - 1].recording_time = recording_time;
3565     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3566
3567     /* check filename in case of an image number is expected */
3568     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3569         if (!av_filename_number_test(oc->filename)) {
3570             print_error(oc->filename, AVERROR(EINVAL));
3571             exit_program(1);
3572         }
3573     }
3574
3575     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3576         /* test if it already exists to avoid loosing precious files */
3577         if (!file_overwrite &&
3578             (strchr(filename, ':') == NULL ||
3579              filename[1] == ':' ||
3580              av_strstart(filename, "file:", NULL))) {
3581             if (avio_check(filename, 0) == 0) {
3582                 if (!using_stdin) {
3583                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3584                     fflush(stderr);
3585                     if (!read_yesno()) {
3586                         fprintf(stderr, "Not overwriting - exiting\n");
3587                         exit_program(1);
3588                     }
3589                 }
3590                 else {
3591                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3592                     exit_program(1);
3593                 }
3594             }
3595         }
3596
3597         /* open the file */
3598         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3599             print_error(filename, err);
3600             exit_program(1);
3601         }
3602     }
3603
3604     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3605     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3606     oc->flags |= AVFMT_FLAG_NONBLOCK;
3607
3608     /* copy chapters */
3609     if (chapters_input_file >= nb_input_files) {
3610         if (chapters_input_file == INT_MAX) {
3611             /* copy chapters from the first input file that has them*/
3612             chapters_input_file = -1;
3613             for (i = 0; i < nb_input_files; i++)
3614                 if (input_files[i].ctx->nb_chapters) {
3615                     chapters_input_file = i;
3616                     break;
3617                 }
3618         } else {
3619             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3620                    chapters_input_file);
3621             exit_program(1);
3622         }
3623     }
3624     if (chapters_input_file >= 0)
3625         copy_chapters(chapters_input_file, nb_output_files - 1);
3626
3627     /* copy metadata */
3628     for (i = 0; i < nb_meta_data_maps; i++) {
3629         AVFormatContext *files[2];
3630         AVDictionary    **meta[2];
3631         int j;
3632
3633 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3634         if ((index) < 0 || (index) >= (nb_elems)) {\
3635             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3636                      (desc), (index));\
3637             exit_program(1);\
3638         }
3639
3640         int in_file_index = meta_data_maps[i][1].file;
3641         if (in_file_index < 0)
3642             continue;
3643         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3644
3645         files[0] = oc;
3646         files[1] = input_files[in_file_index].ctx;
3647
3648         for (j = 0; j < 2; j++) {
3649             MetadataMap *map = &meta_data_maps[i][j];
3650
3651             switch (map->type) {
3652             case 'g':
3653                 meta[j] = &files[j]->metadata;
3654                 break;
3655             case 's':
3656                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3657                 meta[j] = &files[j]->streams[map->index]->metadata;
3658                 break;
3659        &nbs